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11076-19-0

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  • 2,4,8,10,14,18,20-Docosaheptaenedioicacid, 20-(carboxymethyl)-6-methoxy-2,5,17-trimethyl-,(2E,4Z,6R,8Z,10E,14E,17S,18E,20Z)- 11076-19-0

    Cas No: 11076-19-0

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11076-19-0 Usage

Description

Bongkrekic acid (11076-19-0) is a p potent inhibitory ligand of the mitochondrial adenine nucleotide translocase (ANT).1?Inhibits mitochondrial permeability transition pore opening.2,3?Delivery of bongkrekic acid to the mitochondria prevents apoptosis in HeLa cells.4

Uses

Bongkrekic acid solution has been used as an adenine nucleotide translocator (ANT) inhibitor to find out a different approach for the inhibition of oxidative phosphorylation in intact T98G cells. It has also been used as an inhibitor of the permeabilization transition pore complex (PTPC) pore and a tool to explore the role of PTPC in induction of apoptosis.

Definition

ChEBI: A tricarboxylic acid that is docosa-2,4,8,10,14,18,20-heptaenedioic acid substituted at positions 2 ,5 and 17 by methyl groups, at positions 6 by a methoxy group and at position 20 by a carboxymethyl group.

Biochem/physiol Actions

An antiapoptotic agent, it protects against NMDA receptor induced neuronal apoptosis,- extends cell survival in cells undergoing apoptosis following infection with viral vectors and abrogates apoptosis induced by hydrogen peroxide in T-cells. It is an inhibitor of adenine nucleotide translocase, which is a component of the mitochondrial permeability transition (MPT) pore complex. Bongkrekic acid prevents mitochondrial depolarization, swelling, rupture of mitochondrial outer membrane, and release of apoptogenic proteins such as cytochrome c. This phenomenon was observed during staurosporine induced apoptosis in Jurkat cells, in HepG2 undergoing apoptosis following TNF-α and ethanol.

Enzyme inhibitor

This toxic tricarboxylic acid (FWfree-acid = 486.61 g/mol; CAS 11076-19-0), produced Pseudomonas cocovenenans, is a potent competitive inhibitor of the mitochondrial ATP-ADP translocator, effectively blocking nucleotide binding to the carrier. The name is derived from bongkrek, a moldy coconut product produced in Indonesia. The toxin accumulates when P. cocovenenans outgrows the mold. Klingenberg et al. investigated bongkrekate binding to mitochondrial membrane to examine the reorienting site mechanism. The inferred mode of inhibition requires bongkrekate to bind to the single carrier site only from the inner face of the mitochondrial membrane (i.e., the matrix side)). They confirmed the pH-dependent accumulation of [3H]bongkrekate inside the mitochondria which superimposes onto the binding at carrier sites. By breaking the membrane with Lubrol or sonication, binding to the carrier sites could be titrated, and a Kd value of approximately 5 x 10–8 M was determined. The presence of ADP or ATP increases the amount of binding but does not alter the Kd. [35S]Atractylate is displaced by [3H]bongkrekate at a 1:1 molar ratio; this displacement is dependent on ADP concentration with the Km = 0.5 x 10–6 M. See also Atractyloside The isomer known as isobongkrekic acid, which has a cis-double bond at the dicarboxylic acid end of the molecule, has similar biological activity. Target(s): Adenine nucleotide translocator, ADP/ATP carrier; ATPase; bromelain, stem; papain; ficain, or ficin.

References

1) Ziegler?et al. (1993),?The adenine nucleotide translocase modulates oligomycin-induced quenching of pyranine fluorescence in submitochondrial particles; J. Biol. Chem.,?268?25320 2) Marchetti?et al. (1996),?Mitochondrial permeability transition triggers lymphocyte apoptosis; J. Immunol.,?157?4830 3) Zamzami?et al. (1996),?Inhibitors of permeability transition interfere with the disruption of the mitochondrial transmembrane potential during apoptosis; FEBS Lett.,?384?53 4) Yamada?et al. (2013),?Mitochondrial delivery of bongkrekic acid using a MITO-Porter prevents the induction of apoptosis in human HeLa cells; J. Pharm. Sci.,?102?1008

Check Digit Verification of cas no

The CAS Registry Mumber 11076-19-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,0,7 and 6 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 11076-19:
(7*1)+(6*1)+(5*0)+(4*7)+(3*6)+(2*1)+(1*9)=70
70 % 10 = 0
So 11076-19-0 is a valid CAS Registry Number.
InChI:InChI=1/C28H38O7/c1-21(15-18-24(19-26(29)30)20-27(31)32)13-11-9-7-5-6-8-10-12-14-25(35-4)22(2)16-17-23(3)28(33)34/h6,8-12,15-19,21,25H,5,7,13-14,20H2,1-4H3,(H,29,30)(H,31,32)(H,33,34)/b8-6+,11-9-,12-10+,18-15-,22-16-,23-17+,24-19+

11076-19-0 Well-known Company Product Price

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  • (B6179)  Bongkrekic acid solution  from Pseudomonas cocovenenans, ≥95% (HPLC), ~1 mg/mL

  • 11076-19-0

  • B6179-.5MG

  • 4,973.67CNY

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11076-19-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name bongkrekic acid

1.2 Other means of identification

Product number -
Other names Bongkrekic Acid, Triammonium Salt

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

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More Details:11076-19-0 SDS

11076-19-0Synthetic route

(6R,17S)-bis(methoxymethyl) 20-(2-hydroxyethyl)-6-methoxy-2,5,17-trimethyldocosa-2,4,8,10,14,18,20-heptaenedioate

(6R,17S)-bis(methoxymethyl) 20-(2-hydroxyethyl)-6-methoxy-2,5,17-trimethyldocosa-2,4,8,10,14,18,20-heptaenedioate

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
With hydrogenchloride; water In tetrahydrofuran at 0 - 20℃; for 1h;92%
(Z)-3-[(1E,3S,5E,9E,11Z,14R,15Z,17E)-19-tert-butoxy-14-methoxy-3,15,18-trimethyl-19-oxononadeca-1,5,9,11,15,17-hexaenyl]pent-2-enedioic acid
1196458-46-4

(Z)-3-[(1E,3S,5E,9E,11Z,14R,15Z,17E)-19-tert-butoxy-14-methoxy-3,15,18-trimethyl-19-oxononadeca-1,5,9,11,15,17-hexaenyl]pent-2-enedioic acid

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
With hydrogenchloride; water In tetrahydrofuran at 20℃; for 3h;83%
(2E,4Z,8Z,10E,14E)-(6R,17S)-17-(4-Carboxymethyl-6-oxo-3,6-dihydro-2H-pyran-2-yl)-6-methoxy-2,5-dimethyl-octadeca-2,4,8,10,14-pentaenoic acid
88304-12-5, 88335-55-1

(2E,4Z,8Z,10E,14E)-(6R,17S)-17-(4-Carboxymethyl-6-oxo-3,6-dihydro-2H-pyran-2-yl)-6-methoxy-2,5-dimethyl-octadeca-2,4,8,10,14-pentaenoic acid

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
With potassium methanolate In tetrahydrofuran; methanol at 0℃; for 0.0833333h;65%
C31H44O7

C31H44O7

A

bongkrekic acid
11076-19-0

bongkrekic acid

B

isobongkrekic acid
60132-21-0

isobongkrekic acid

Conditions
ConditionsYield
Stage #1: C31H44O7 With water; potassium hydroxide In 1,2-dimethoxyethane at 20℃; for 8h;
Stage #2: With hydrogenchloride In 1,2-dimethoxyethane; water optical yield given as %de; Further stages;
A 17%
B 35%
BAMe3

BAMe3

A

bongkrekic acid
11076-19-0

bongkrekic acid

B

isobongkrekic acid
60132-21-0

isobongkrekic acid

Conditions
ConditionsYield
With potassium hydroxide In 1,2-dimethoxyethane; water at 20℃; for 8h;A 35%
B 17%
(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-20-Carboxymethyl-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenedioic acid 1-tert-butyl ester 22-(tert-butyl-diphenyl-silanyloxymethyl) ester
808771-36-0

(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-20-Carboxymethyl-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenedioic acid 1-tert-butyl ester 22-(tert-butyl-diphenyl-silanyloxymethyl) ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
With hydrogenchloride In methanol; water at 20℃;
(Z)-4-((R)-3-Methyl-5-oxo-2,5-dihydro-furan-2-yl)-but-2-enal

(Z)-4-((R)-3-Methyl-5-oxo-2,5-dihydro-furan-2-yl)-but-2-enal

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 11 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: Dess-Martin reagent / benzene; CH2Cl2
4.1: 80 percent / benzene
5.1: 82 percent / HCl / H2O; tetrahydrofuran
6.1: MnO2 / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.3: 40 percent / Et3N / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 14 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: 93 percent / Na-Hg; Na2HPO4 / methanol
4.1: 96 percent / Et3N / CH2Cl2
5.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
6.1: 81 percent / DIBAH / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
8.1: 80 percent / benzene
9.1: 82 percent / HCl / H2O; tetrahydrofuran
10.1: MnO2 / benzene; CH2Cl2
10.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.3: 40 percent / Et3N / tetrahydrofuran
11.1: Dess-Martin reagent / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.1: HCl / H2O; methanol / 20 °C
View Scheme
(R)-5-((Z)-4-Hydroxy-but-2-enyl)-4-methyl-5H-furan-2-one
808771-43-9

(R)-5-((Z)-4-Hydroxy-but-2-enyl)-4-methyl-5H-furan-2-one

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 12 steps
1.1: MnO2 / CH2Cl2
2.1: 86 percent / BuLi; HMPA / tetrahydrofuran
3.1: DIBAH / tetrahydrofuran
3.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
4.1: Dess-Martin reagent / benzene; CH2Cl2
5.1: 80 percent / benzene
6.1: 82 percent / HCl / H2O; tetrahydrofuran
7.1: MnO2 / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
7.3: 40 percent / Et3N / tetrahydrofuran
8.1: Dess-Martin reagent / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
9.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 15 steps
1.1: MnO2 / CH2Cl2
2.1: 86 percent / BuLi; HMPA / tetrahydrofuran
3.1: DIBAH / tetrahydrofuran
3.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
4.1: 93 percent / Na-Hg; Na2HPO4 / methanol
5.1: 96 percent / Et3N / CH2Cl2
6.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
7.1: 81 percent / DIBAH / tetrahydrofuran
8.1: Dess-Martin reagent / benzene; CH2Cl2
9.1: 80 percent / benzene
10.1: 82 percent / HCl / H2O; tetrahydrofuran
11.1: MnO2 / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
11.3: 40 percent / Et3N / tetrahydrofuran
12.1: Dess-Martin reagent / benzene; CH2Cl2
12.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
13.1: HCl / H2O; methanol / 20 °C
View Scheme
(R)-5-((2Z,4E)-6-Bromo-hexa-2,4-dienyl)-4-methyl-5H-furan-2-one
808771-29-1

(R)-5-((2Z,4E)-6-Bromo-hexa-2,4-dienyl)-4-methyl-5H-furan-2-one

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: Dess-Martin reagent / benzene; CH2Cl2
4.1: 80 percent / benzene
5.1: 82 percent / HCl / H2O; tetrahydrofuran
6.1: MnO2 / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.3: 40 percent / Et3N / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 12 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: 93 percent / Na-Hg; Na2HPO4 / methanol
4.1: 96 percent / Et3N / CH2Cl2
5.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
6.1: 81 percent / DIBAH / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
8.1: 80 percent / benzene
9.1: 82 percent / HCl / H2O; tetrahydrofuran
10.1: MnO2 / benzene; CH2Cl2
10.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.3: 40 percent / Et3N / tetrahydrofuran
11.1: Dess-Martin reagent / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,6E)-(S)-5-Methyl-7-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-hepta-2,6-dien-1-ol
808771-19-9

(2E,6E)-(S)-5-Methyl-7-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-hepta-2,6-dien-1-ol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 11 steps
1.1: 92 percent / Et3N / PdCl2(PPh3)2 / methanol
2.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
2.2: 81 percent / dimethylformamide
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: Dess-Martin reagent / benzene; CH2Cl2
6.1: 80 percent / benzene
7.1: 82 percent / HCl / H2O; tetrahydrofuran
8.1: MnO2 / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.3: 40 percent / Et3N / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
9.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 14 steps
1.1: 92 percent / Et3N / PdCl2(PPh3)2 / methanol
2.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
2.2: 81 percent / dimethylformamide
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: 93 percent / Na-Hg; Na2HPO4 / methanol
6.1: 96 percent / Et3N / CH2Cl2
7.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
8.1: 81 percent / DIBAH / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
10.1: 80 percent / benzene
11.1: 82 percent / HCl / H2O; tetrahydrofuran
12.1: MnO2 / benzene; CH2Cl2
12.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.3: 40 percent / Et3N / tetrahydrofuran
13.1: Dess-Martin reagent / benzene; CH2Cl2
13.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
14.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,4Z)-6-((R)-3-Methyl-5-oxo-2,5-dihydro-furan-2-yl)-hexa-2,4-dienoic acid tert-butyl ester
808771-28-0

(2E,4Z)-6-((R)-3-Methyl-5-oxo-2,5-dihydro-furan-2-yl)-hexa-2,4-dienoic acid tert-butyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 10 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: Dess-Martin reagent / benzene; CH2Cl2
4.1: 80 percent / benzene
5.1: 82 percent / HCl / H2O; tetrahydrofuran
6.1: MnO2 / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.3: 40 percent / Et3N / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 13 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: 93 percent / Na-Hg; Na2HPO4 / methanol
4.1: 96 percent / Et3N / CH2Cl2
5.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
6.1: 81 percent / DIBAH / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
8.1: 80 percent / benzene
9.1: 82 percent / HCl / H2O; tetrahydrofuran
10.1: MnO2 / benzene; CH2Cl2
10.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.3: 40 percent / Et3N / tetrahydrofuran
11.1: Dess-Martin reagent / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.1: HCl / H2O; methanol / 20 °C
View Scheme
(R)-5-[(Z)-4-(4-Methoxy-benzyloxy)-but-2-enyl]-4-methyl-5H-furan-2-one
808771-27-9

(R)-5-[(Z)-4-(4-Methoxy-benzyloxy)-but-2-enyl]-4-methyl-5H-furan-2-one

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 13 steps
1.1: 92 percent / DDQ / CH2Cl2; H2O
2.1: MnO2 / CH2Cl2
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: Dess-Martin reagent / benzene; CH2Cl2
6.1: 80 percent / benzene
7.1: 82 percent / HCl / H2O; tetrahydrofuran
8.1: MnO2 / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.3: 40 percent / Et3N / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
9.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 16 steps
1.1: 92 percent / DDQ / CH2Cl2; H2O
2.1: MnO2 / CH2Cl2
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: 93 percent / Na-Hg; Na2HPO4 / methanol
6.1: 96 percent / Et3N / CH2Cl2
7.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
8.1: 81 percent / DIBAH / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
10.1: 80 percent / benzene
11.1: 82 percent / HCl / H2O; tetrahydrofuran
12.1: MnO2 / benzene; CH2Cl2
12.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.3: 40 percent / Et3N / tetrahydrofuran
13.1: Dess-Martin reagent / benzene; CH2Cl2
13.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
14.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,6E,8Z)-(S)-10-(tert-Butyl-dimethyl-silanyloxy)-8-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-deca-2,6,8-trien-1-ol
808771-22-4

(2E,6E,8Z)-(S)-10-(tert-Butyl-dimethyl-silanyloxy)-8-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-deca-2,6,8-trien-1-ol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 10 steps
1.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
1.2: 81 percent / dimethylformamide
2.1: 86 percent / BuLi; HMPA / tetrahydrofuran
3.1: DIBAH / tetrahydrofuran
3.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
4.1: Dess-Martin reagent / benzene; CH2Cl2
5.1: 80 percent / benzene
6.1: 82 percent / HCl / H2O; tetrahydrofuran
7.1: MnO2 / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
7.3: 40 percent / Et3N / tetrahydrofuran
8.1: Dess-Martin reagent / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
9.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 13 steps
1.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
1.2: 81 percent / dimethylformamide
2.1: 86 percent / BuLi; HMPA / tetrahydrofuran
3.1: DIBAH / tetrahydrofuran
3.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
4.1: 93 percent / Na-Hg; Na2HPO4 / methanol
5.1: 96 percent / Et3N / CH2Cl2
6.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
7.1: 81 percent / DIBAH / tetrahydrofuran
8.1: Dess-Martin reagent / benzene; CH2Cl2
9.1: 80 percent / benzene
10.1: 82 percent / HCl / H2O; tetrahydrofuran
11.1: MnO2 / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
11.3: 40 percent / Et3N / tetrahydrofuran
12.1: Dess-Martin reagent / benzene; CH2Cl2
12.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
13.1: HCl / H2O; methanol / 20 °C
View Scheme
(R)-4-benzyl-3-((S,E)-6-(tert-butyldiphenylsilyloxy)-2-methylhex-4-enoyl)oxazolidin-2-one
808771-17-7

(R)-4-benzyl-3-((S,E)-6-(tert-butyldiphenylsilyloxy)-2-methylhex-4-enoyl)oxazolidin-2-one

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 12 steps
1.1: 92 percent / Et3N / PdCl2(PPh3)2 / methanol
2.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
2.2: 81 percent / dimethylformamide
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: Dess-Martin reagent / benzene; CH2Cl2
6.1: 80 percent / benzene
7.1: 82 percent / HCl / H2O; tetrahydrofuran
8.1: MnO2 / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.3: 40 percent / Et3N / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
9.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 15 steps
1.1: 92 percent / Et3N / PdCl2(PPh3)2 / methanol
2.1: MsCl; iPr2EtN; 4-DMAP / CH2Cl2
2.2: 81 percent / dimethylformamide
3.1: 86 percent / BuLi; HMPA / tetrahydrofuran
4.1: DIBAH / tetrahydrofuran
4.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
5.1: 93 percent / Na-Hg; Na2HPO4 / methanol
6.1: 96 percent / Et3N / CH2Cl2
7.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
8.1: 81 percent / DIBAH / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
10.1: 80 percent / benzene
11.1: 82 percent / HCl / H2O; tetrahydrofuran
12.1: MnO2 / benzene; CH2Cl2
12.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.3: 40 percent / Et3N / tetrahydrofuran
13.1: Dess-Martin reagent / benzene; CH2Cl2
13.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
14.1: HCl / H2O; methanol / 20 °C
View Scheme
{(2E,6E,8Z)-(S)-10-(tert-Butyl-dimethyl-silanyloxy)-8-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-deca-2,6,8-triene-1-sulfonyl}-benzene
808771-23-5

{(2E,6E,8Z)-(S)-10-(tert-Butyl-dimethyl-silanyloxy)-8-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-methyl-deca-2,6,8-triene-1-sulfonyl}-benzene

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: Dess-Martin reagent / benzene; CH2Cl2
4.1: 80 percent / benzene
5.1: 82 percent / HCl / H2O; tetrahydrofuran
6.1: MnO2 / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.3: 40 percent / Et3N / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 12 steps
1.1: 86 percent / BuLi; HMPA / tetrahydrofuran
2.1: DIBAH / tetrahydrofuran
2.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
3.1: 93 percent / Na-Hg; Na2HPO4 / methanol
4.1: 96 percent / Et3N / CH2Cl2
5.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
6.1: 81 percent / DIBAH / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
8.1: 80 percent / benzene
9.1: 82 percent / HCl / H2O; tetrahydrofuran
10.1: MnO2 / benzene; CH2Cl2
10.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.3: 40 percent / Et3N / tetrahydrofuran
11.1: Dess-Martin reagent / benzene; CH2Cl2
11.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
12.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-22-Hydroxy-20-(2-hydroxy-ethyl)-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenoic acid tert-butyl ester
1027938-85-7

(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-22-Hydroxy-20-(2-hydroxy-ethyl)-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenoic acid tert-butyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: MnO2 / benzene; CH2Cl2
1.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
1.3: 40 percent / Et3N / tetrahydrofuran
2.1: Dess-Martin reagent / benzene; CH2Cl2
2.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
3.1: HCl / H2O; methanol / 20 °C
View Scheme
(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenal
808771-46-2

(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenal

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: 80 percent / benzene
2.1: 82 percent / HCl / H2O; tetrahydrofuran
3.1: MnO2 / benzene; CH2Cl2
3.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
3.3: 40 percent / Et3N / tetrahydrofuran
4.1: Dess-Martin reagent / benzene; CH2Cl2
4.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
5.1: HCl / H2O; methanol / 20 °C
View Scheme
(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaen-1-ol
808771-33-7

(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaen-1-ol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: Dess-Martin reagent / benzene; CH2Cl2
2.1: 80 percent / benzene
3.1: 82 percent / HCl / H2O; tetrahydrofuran
4.1: MnO2 / benzene; CH2Cl2
4.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
4.3: 40 percent / Et3N / tetrahydrofuran
5.1: Dess-Martin reagent / benzene; CH2Cl2
5.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.1: HCl / H2O; methanol / 20 °C
View Scheme
(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaene-1,4-diol
808772-71-6

(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-Butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaene-1,4-diol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1.1: 96 percent / Et3N / CH2Cl2
2.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
3.1: 81 percent / DIBAH / tetrahydrofuran
4.1: Dess-Martin reagent / benzene; CH2Cl2
5.1: 80 percent / benzene
6.1: 82 percent / HCl / H2O; tetrahydrofuran
7.1: MnO2 / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
7.3: 40 percent / Et3N / tetrahydrofuran
8.1: Dess-Martin reagent / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
9.1: HCl / H2O; methanol / 20 °C
View Scheme
2,2-Dimethyl-propionic acid (2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenyl ester
808771-45-1

2,2-Dimethyl-propionic acid (2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methoxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: 81 percent / DIBAH / tetrahydrofuran
2.1: Dess-Martin reagent / benzene; CH2Cl2
3.1: 80 percent / benzene
4.1: 82 percent / HCl / H2O; tetrahydrofuran
5.1: MnO2 / benzene; CH2Cl2
5.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
5.3: 40 percent / Et3N / tetrahydrofuran
6.1: Dess-Martin reagent / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
7.1: HCl / H2O; methanol / 20 °C
View Scheme
2,2-Dimethyl-propionic acid (2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-hydroxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenyl ester
808772-72-7

2,2-Dimethyl-propionic acid (2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-hydroxy-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaenyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
2.1: 81 percent / DIBAH / tetrahydrofuran
3.1: Dess-Martin reagent / benzene; CH2Cl2
4.1: 80 percent / benzene
5.1: 82 percent / HCl / H2O; tetrahydrofuran
6.1: MnO2 / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.3: 40 percent / Et3N / tetrahydrofuran
7.1: Dess-Martin reagent / benzene; CH2Cl2
7.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.1: HCl / H2O; methanol / 20 °C
View Scheme
(R)-5-{(2Z,4E,8E,12E,14Z)-(S)-7-Benzenesulfonyl-16-(tert-butyl-dimethyl-silanyloxy)-14-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-11-methyl-hexadeca-2,4,8,12,14-pentaenyl}-4-methyl-5H-furan-2-one
808771-31-5

(R)-5-{(2Z,4E,8E,12E,14Z)-(S)-7-Benzenesulfonyl-16-(tert-butyl-dimethyl-silanyloxy)-14-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-11-methyl-hexadeca-2,4,8,12,14-pentaenyl}-4-methyl-5H-furan-2-one

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: DIBAH / tetrahydrofuran
1.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
2.1: Dess-Martin reagent / benzene; CH2Cl2
3.1: 80 percent / benzene
4.1: 82 percent / HCl / H2O; tetrahydrofuran
5.1: MnO2 / benzene; CH2Cl2
5.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
5.3: 40 percent / Et3N / tetrahydrofuran
6.1: Dess-Martin reagent / benzene; CH2Cl2
6.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
7.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 11 steps
1.1: DIBAH / tetrahydrofuran
1.2: 70 percent / NaBH4 / tetrahydrofuran; H2O
2.1: 93 percent / Na-Hg; Na2HPO4 / methanol
3.1: 96 percent / Et3N / CH2Cl2
4.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
5.1: 81 percent / DIBAH / tetrahydrofuran
6.1: Dess-Martin reagent / benzene; CH2Cl2
7.1: 80 percent / benzene
8.1: 82 percent / HCl / H2O; tetrahydrofuran
9.1: MnO2 / benzene; CH2Cl2
9.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
9.3: 40 percent / Et3N / tetrahydrofuran
10.1: Dess-Martin reagent / benzene; CH2Cl2
10.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
11.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-22-(tert-Butyl-dimethyl-silanyloxy)-20-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenoic acid tert-butyl ester
808771-34-8

(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-22-(tert-Butyl-dimethyl-silanyloxy)-20-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenoic acid tert-butyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: 82 percent / HCl / H2O; tetrahydrofuran
2.1: MnO2 / benzene; CH2Cl2
2.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
2.3: 40 percent / Et3N / tetrahydrofuran
3.1: Dess-Martin reagent / benzene; CH2Cl2
3.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
4.1: HCl / H2O; methanol / 20 °C
View Scheme
(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-11-Benzenesulfonyl-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaene-1,4-diol

(2Z,6Z,8E,12E,16E,18Z)-(4R,15S)-11-Benzenesulfonyl-20-(tert-butyl-dimethyl-silanyloxy)-18-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3,15-dimethyl-icosa-2,6,8,12,16,18-hexaene-1,4-diol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: Dess-Martin reagent / benzene; CH2Cl2
2.1: 80 percent / benzene
3.1: 82 percent / HCl / H2O; tetrahydrofuran
4.1: MnO2 / benzene; CH2Cl2
4.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
4.3: 40 percent / Et3N / tetrahydrofuran
5.1: Dess-Martin reagent / benzene; CH2Cl2
5.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
6.1: HCl / H2O; methanol / 20 °C
View Scheme
Multi-step reaction with 10 steps
1.1: 93 percent / Na-Hg; Na2HPO4 / methanol
2.1: 96 percent / Et3N / CH2Cl2
3.1: 83 percent / 2,6-di-tert-butylpyridine / benzene
4.1: 81 percent / DIBAH / tetrahydrofuran
5.1: Dess-Martin reagent / benzene; CH2Cl2
6.1: 80 percent / benzene
7.1: 82 percent / HCl / H2O; tetrahydrofuran
8.1: MnO2 / benzene; CH2Cl2
8.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
8.3: 40 percent / Et3N / tetrahydrofuran
9.1: Dess-Martin reagent / benzene; CH2Cl2
9.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
10.1: HCl / H2O; methanol / 20 °C
View Scheme
(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-20-(2-Hydroxy-ethyl)-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenedioic acid 1-tert-butyl ester 22-(tert-butyl-diphenyl-silanyloxymethyl) ester
808771-35-9

(2E,4Z,8Z,10E,14E,18E,20Z)-(6R,17S)-20-(2-Hydroxy-ethyl)-6-methoxy-2,5,17-trimethyl-docosa-2,4,8,10,14,18,20-heptaenedioic acid 1-tert-butyl ester 22-(tert-butyl-diphenyl-silanyloxymethyl) ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: Dess-Martin reagent / benzene; CH2Cl2
1.2: NaClO2; NaH2PO4; 2-methyl-2-butene / tetrahydrofuran; 2-methyl-propan-2-ol; H2O
2.1: HCl / H2O; methanol / 20 °C
View Scheme
dimethyl 3-methyl-2-trans-pentenedioate
81061-92-9

dimethyl 3-methyl-2-trans-pentenedioate

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 1.) lithium diisopropylamide, hexamethylphosphoric triamide / 1.) THF, -78 - 0 deg C, 1 h, 2.) -40 - 0 deg C, 20 min
3: 2.) tetra-n-butylammonium hydroxide / 1.) Lindlar reduction, 2.) methanol, water, 23 deg C, 30 min
4: 65 percent / potassium methoxide / tetrahydrofuran; methanol / 0.08 h / 0 °C
View Scheme
(E)-(S)-2-Methyl-non-4-en-8-ynal
88303-96-2

(E)-(S)-2-Methyl-non-4-en-8-ynal

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 1.) lithium diisopropylamide, hexamethylphosphoric triamide / 1.) THF, -78 - 0 deg C, 1 h, 2.) -40 - 0 deg C, 20 min
3: 2.) tetra-n-butylammonium hydroxide / 1.) Lindlar reduction, 2.) methanol, water, 23 deg C, 30 min
4: 65 percent / potassium methoxide / tetrahydrofuran; methanol / 0.08 h / 0 °C
View Scheme
(E)-(S)-2-Methyl-non-4-en-8-yn-1-ol
88304-00-1

(E)-(S)-2-Methyl-non-4-en-8-yn-1-ol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: pyridinium chlorochromate, neutral alumina / CH2Cl2 / 1.5 h / 23 °C
2: 1.) lithium diisopropylamide, hexamethylphosphoric triamide / 1.) THF, -78 - 0 deg C, 1 h, 2.) -40 - 0 deg C, 20 min
4: 2.) tetra-n-butylammonium hydroxide / 1.) Lindlar reduction, 2.) methanol, water, 23 deg C, 30 min
5: 65 percent / potassium methoxide / tetrahydrofuran; methanol / 0.08 h / 0 °C
View Scheme
(R)-1-(S)-Oxiranyl-4-triisopropylsilanyl-but-3-yn-1-ol
88304-15-8

(R)-1-(S)-Oxiranyl-4-triisopropylsilanyl-but-3-yn-1-ol

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 13 steps
1: 96 percent / sodium hydride / tetrahydrofuran / 20 °C
2: 81 percent / ethanol / 10 h / 35 °C
3: 93 percent / diisopropylcarbodiimide, dimethyl sulfoxide, dichloroacetic acid / 0.5 h / 0 °C
4: 1.) sodium hydride / 1.) ether, 23 deg C, 2.) 0 deg C, 10 min
5: sodium hydride, ether, Me2SO / 0.5 h / 0 °C
6: 86 percent / tetrahydrofuran / 0.17 h / -78 °C
7: 88 percent / diisobutylaluminum hydride / CH2Cl2 / 0.08 h / -78 °C
8: 96 percent / tetrahydrofuran / 4 h / 23 °C
9: 99 percent / tetrabutylammonium fluoride / tetrahydrofuran / 1 h / 23 °C
10: 1.) silver trifluoroacetate, triethylamine, 2.) bromine / 1.) 20 deg C, 2.) -78 deg C
12: 2.) tetra-n-butylammonium hydroxide / 1.) Lindlar reduction, 2.) methanol, water, 23 deg C, 30 min
13: 65 percent / potassium methoxide / tetrahydrofuran; methanol / 0.08 h / 0 °C
View Scheme
(2E,4Z)-(R)-6-Methoxy-2,5-dimethyl-nona-2,4-dien-8-ynoic acid ethyl ester
88303-97-3

(2E,4Z)-(R)-6-Methoxy-2,5-dimethyl-nona-2,4-dien-8-ynoic acid ethyl ester

bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 1.) silver trifluoroacetate, triethylamine, 2.) bromine / 1.) 20 deg C, 2.) -78 deg C
3: 2.) tetra-n-butylammonium hydroxide / 1.) Lindlar reduction, 2.) methanol, water, 23 deg C, 30 min
4: 65 percent / potassium methoxide / tetrahydrofuran; methanol / 0.08 h / 0 °C
View Scheme
bongkrekic acid
11076-19-0

bongkrekic acid

methyl (2E,4Z,6R,8Z,10E,14E,17S,18E,20Z)-17-methoxy-21-methoxycarbonyl-3-methoxycarbonylmethyl-6,18-dimethylcosa-2,4,8,12,14,18,20-heptaenoate
42415-59-8

methyl (2E,4Z,6R,8Z,10E,14E,17S,18E,20Z)-17-methoxy-21-methoxycarbonyl-3-methoxycarbonylmethyl-6,18-dimethylcosa-2,4,8,12,14,18,20-heptaenoate

Conditions
ConditionsYield
In diethyl ether at 0℃; for 0.5h; Inert atmosphere;100%
In diethyl ether
bongkrekic acid
11076-19-0

bongkrekic acid

diazomethyl-trimethyl-silane
18107-18-1

diazomethyl-trimethyl-silane

methyl (2E,4Z,6R,8Z,10E,14E,17S,18E,20Z)-17-methoxy-21-methoxycarbonyl-3-methoxycarbonylmethyl-6,18-dimethylcosa-2,4,8,12,14,18,20-heptaenoate
42415-59-8

methyl (2E,4Z,6R,8Z,10E,14E,17S,18E,20Z)-17-methoxy-21-methoxycarbonyl-3-methoxycarbonylmethyl-6,18-dimethylcosa-2,4,8,12,14,18,20-heptaenoate

Conditions
ConditionsYield
In methanol; diethyl ether; dichloromethane at 20℃; for 0.666667h;100%
bongkrekic acid
11076-19-0

bongkrekic acid

Conditions
ConditionsYield
With diazomethyl-trimethyl-silane In methanol; diethyl ether; dichloromethane at 20℃; for 0.666667h;100%

11076-19-0Downstream Products

11076-19-0Related news

Synthesis and evaluation of simplified functionalized BONGKREKIC ACID (cas 11076-19-0) analogs07/16/2019

Bongkrekic acid (BKA) is a strong inhibitor of adenine nucleotide translocase (ANT), inducing inhibition of adenosine triphosphate synthesis. We designed and synthesized simplified benzene-ring-containing BKA analogs. The key reaction is the one-pot double Sonogashira reaction, which forms the m...detailed

11076-19-0Relevant articles and documents

Lanquin et al.

, p. 2323,2325 (1976)

Efficient Total Synthesis of Bongkrekic Acid and Apoptosis Inhibitory Activity of Its Analogues

Matsumoto, Kenji,Suyama, Masaki,Fujita, Satoshi,Moriwaki, Takuya,Sato, Yukiko,Aso, Yoshifumi,Muroshita, Satoshi,Matsuo, Hiroshi,Monda, Keishi,Okuda, Katsuhiro,Abe, Masato,Fukunaga, Hiroyuki,Kano, Arihiro,Shindo, Mitsuru

, p. 11590 - 11602 (2015/08/03)

Bongkrekic acid (BKA), isolated from the bacterium Burkholderia cocovenenans, is an inhibitor of adenine nucleotide translocator, which inhibits apoptosis, and is thus an important tool for the mechanistic investigation of apoptosis. An efficient total synthesis of BKA has been achieved by employing a three-component convergent strategy based on Kocienski-Julia olefination and Suzuki-Miyaura coupling. It is noteworthy that segment B has been prepared as a new doubly functionalized coupling partner, which contributes to shortening of the number of steps. Torquoselective olefination with an ynolate has also been applied for the efficient construction of an unsaturated ester. Furthermore, it is revealed that 1-methyl-2-azaadamantane N-oxyl is an excellent reagent for final oxidation to afford BKA in high yield. Based on the total synthesis, several BKA analogues were prepared for structure-activity relationship studies, which indicated that the carboxylic acid moieties were essential for the apoptosis inhibitory activity of BKA. More easily available BKA analogues with potent apoptosis inhibitory activity were also developed. Stripped BKA: The highly efficient second-generation total synthesis of bongkrekic acid (BKA), an apoptosis inhibitor, has been developed. The synthesis features a three-component convergent strategy based on a Kocienski-Julia olefination and Suzuki-Miyaura coupling. The structure-activity relationship (SAR) is also examined for the first time (see scheme).

Total synthesis of the anti-apoptotic agents Iso- And bongkrekic acids

Francais, Antoine,Leyva, Antonio,Etxebarria-Jardi, Gorka,Ley, Steven V.

supporting information; experimental part, p. 340 - 343 (2010/03/25)

(Figure presented) The first convergent total synthesis of isobongkrekic acid is reported involving three different stereospecific palladium cross-couplings for the formation of the diene units. Access to bongkrekic acid by this route is also demonstrated. These syntheses involve the formation of several potentially general building blocks.

Efficient synthesis of bongkrekic acid. Three-component convergent strategy

Sato, Yukiko,Aso, Yoshifumi,Shindo, Mitsuru

scheme or table, p. 4164 - 4166 (2009/12/01)

An efficient total synthesis of the apoptosis inhibitor bongkrekic acid was accomplished using a three-component convergent strategy involving a Kocienski-Julia olefination and a Suzuki-Miyaura coupling, in which the longest linear sequence was 18 steps and proceeded in 6.4% overall yield. The torquoselective olefination also contributed to the shortening of the synthesis.

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