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112849-27-1

Basic Information
CAS No.: 112849-27-1
Name: Bis-TBDMS-trans-calcipotriol
Article Data: 5
Molecular Structure:
Molecular Structure of 112849-27-1 (Bis-TBDMS-trans-calcipotriol)
Formula: C39H68O3Si2
Molecular Weight: 641.138
Synonyms: 9,10-Secochola-5,7,10(19),22-tetraen-24-ol,24-cyclopropyl-1,3-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-, (1a,3b,5E,7E,22E,24S)- (9CI);
EINECS: 1312995-182-4
Density: 0.988 g/cm3
Boiling Point: 628.182 °C at 760 mmHg
Flash Point: 333.713 °C
PSA: 38.69000
LogP: 11.14960
Synthetic route
112849-17-9

1(S),3(R)-bis(tert-butyldimethylsilyloxy)-20(R)-(3’-cyclopropyl-3’-oxypropyl-1’(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

A

112849-26-0

(1S,3R,3'R)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

B

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
With sodium tetrahydroborate; cerium(III) chloride In methanol further reag.: (S)-BINAL-H;A 55%
B 33%
Stage #1: 1(S),3(R)-bis(tert-butyldimethylsilyloxy)-20(R)-(3’-cyclopropyl-3’-oxypropyl-1’(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene With borane N,N-diethylaniline complex; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole In tetrahydrofuran; toluene at 0 - 5℃; for 2.66667 - 3.58333h;
Stage #2: With water; sodium hydrogencarbonate In tetrahydrofuran; toluene at 0 - 5℃;
112849-26-0

(1S,3R,3'R)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
With sulfuric acid In tetrahydrofuran; water at 20℃; pH=1.7;45%
With sodium hydrogen sulfate In tetrahydrofuran; water; acetone at 20 - 25℃; for 3.66667h; pH=1.58;
With sulfuric acid In water; ethyl acetate; acetone at 27℃; for 0.583333h; pH=1.25;
With phosphoric acid In tetrahydrofuran; water; acetone at 20℃; for 19h; pH=1.48;
With phosphoric acid In tetrahydrofuran; water; acetone at 30℃; for 6h; pH=1.01;
765-43-5

Cyclopropyl methyl ketone

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: 87 percent / bromine / methanol / 0.5 h / Ambient temperature
2: 84 percent
3: 86 percent / 2N sodium hydroxide / H2O; CH2Cl2
5: N-methylmorpholine N-oxide, selenium dioxide
6: imidazole / dimethylformamide
7: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
Multi-step reaction with 5 steps
1: 87 percent / bromine / methanol / 0.5 h / Ambient temperature
2: 84 percent
3: 86 percent / 2N sodium hydroxide / H2O; CH2Cl2
4: dimethylsulfoxide / 4 h / 105 °C
5: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
69267-75-0

2-bromo-1-cyclopropylethan-1-one

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: 84 percent
2: 86 percent / 2N sodium hydroxide / H2O; CH2Cl2
4: N-methylmorpholine N-oxide, selenium dioxide
5: imidazole / dimethylformamide
6: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
Multi-step reaction with 4 steps
1: 84 percent
2: 86 percent / 2N sodium hydroxide / H2O; CH2Cl2
3: dimethylsulfoxide / 4 h / 105 °C
4: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
7691-76-1

1-cyclopropyl-2-(triphenyl-λ5-phosphanylidene)ethan-1-one

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 4 steps
2: N-methylmorpholine N-oxide, selenium dioxide
3: imidazole / dimethylformamide
4: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
Multi-step reaction with 2 steps
1: dimethylsulfoxide / 4 h / 105 °C
2: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
18162-48-6

tert-butyldimethylsilyl chloride

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: 42 percent / imidazole / dimethylformamide / 1.5 h / 20 °C
2: 1.) ozone 2.) PPh3 / 1.) CH2Cl2, MeOH, -60 deg C 2.) CH2Cl2, MeOH, -60 to 0 deg C
3: NaHCO3 / aq. ethanol / Heating
5: N-methylmorpholine N-oxide, selenium dioxide
6: imidazole / dimethylformamide
7: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
Multi-step reaction with 7 steps
1: 52 percent / imidazole / dimethylformamide / 1.5 h / 20 °C
2: 1.) ozone 2.) PPh3 / 1.) CH2Cl2, MeOH, -60 deg C 2.) CH2Cl2, MeOH, -60 to 0 deg C
3: NaHCO3 / aq. ethanol / Heating
5: N-methylmorpholine N-oxide, selenium dioxide
6: imidazole / dimethylformamide
7: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
112828-12-3

3(R)-(tert-butyldimethylsilyloxy)-20(S)-formyl-9,10-secopregna-5(Z),7(E),10(19)-triene

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 4 steps
2: N-methylmorpholine N-oxide, selenium dioxide
3: imidazole / dimethylformamide
4: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
87680-65-7

(S)-3-[(1R,3aS,7aR)-7a-Methyl-1-((E)-(1R,4R)-1,4,5-trimethyl-hex-2-enyl)-octahydro-inden-(4E)-ylidenemethyl]-2,2-dioxo-2,3,4,5,6,7-hexahydro-1H-2λ6-benzo[c]thiophen-5-ol

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: 42 percent / imidazole / dimethylformamide / 1.5 h / 20 °C
2: 1.) ozone 2.) PPh3 / 1.) CH2Cl2, MeOH, -60 deg C 2.) CH2Cl2, MeOH, -60 to 0 deg C
3: NaHCO3 / aq. ethanol / Heating
5: N-methylmorpholine N-oxide, selenium dioxide
6: imidazole / dimethylformamide
7: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
Multi-step reaction with 7 steps
1: 52 percent / imidazole / dimethylformamide / 1.5 h / 20 °C
2: 1.) ozone 2.) PPh3 / 1.) CH2Cl2, MeOH, -60 deg C 2.) CH2Cl2, MeOH, -60 to 0 deg C
3: NaHCO3 / aq. ethanol / Heating
5: N-methylmorpholine N-oxide, selenium dioxide
6: imidazole / dimethylformamide
7: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
112849-18-0

20(R),3(R)-(tert-butyldimethylsilyloxy)-20-(3'-cyclopropyl-3'-oxoprop-1'(E)-enyl)-9,10-secopregna-5(Z),7(E),10(19)-triene

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: N-methylmorpholine N-oxide, selenium dioxide
2: imidazole / dimethylformamide
3: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme

(E)-(R)-4-{(1R,3aS,7aR)-4-[2-[(R)-5-(tert-Butyl-dimethyl-silanyloxy)-3-hydroxy-2-methylene-cyclohex-(E)-ylidene]-eth-(E)-ylidene]-7a-methyl-octahydro-inden-1-yl}-1-cyclopropyl-pent-2-en-1-one

112849-27-1

(1S,3R,3'S)-bis(tert-butyldimethylsilyloxy)-20(R)-(3'-cyclopropyl-3'-hydroxyprop-1'(E)-enyl)-9,10-secopregna-5(E),7(E),10(19)-triene

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: imidazole / dimethylformamide
2: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H
View Scheme
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112965-21-6
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  • Bis-TBDMS-trans-calcipotriol CAS No.112849-27-1

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Chemistry

Molecule structure of Bis-TBDMS-trans-calcipotriol (CAS NO.112849-27-1):

Molecular Weight: 641.1264 g/mol
Molecular Formula: C39H68O3Si2
Density: 0.988 g/cm3 
Boiling Point: 628.182 °C at 760 mmHg 
Flash Point: 333.713 °C
Index of Refraction: 1.515
Molar Refractivity: 195.675 cm3
Molar Volume: 649.028 cm3
Polarizability: 77.571×10-24 cm3
Surface Tension: 34.044 dyne/cm 
Enthalpy of Vaporization: 106.539 kJ/mol 
InChI: InChI=1/C39H68O3Si2/c1-27(16-23-35(40)30-18-19-30)33-21-22-34-29(15-14-24-39(33,34)9)17-20-31-25-2(41-43(10,11)37(3,4)5)26-36(28(31)2)42-44(12,13)38(6,7)8/h16-17,20,23,27,30,32-36,40H,2,14-15,18-19,21-22,24-6H2,1,3-13H3/b23-16+,29-17+,31-20+/t27-,32-,33-,34+,35-,36,39/m1/s1
InChIKey of Bis-TBDMS-trans-calcipotriol (CAS NO.112849-27-1): DIMYHZDULFSWLS-HIKIKIINBJ

Specification

 Bis-TBDMS-trans-calcipotriol (CAS NO.112849-27-1) is also named as 24-Cycloproyply-1,3-bis[[(1,1-dimethylethyl)dimethylsily]oxy]-9,10-secochola-5,7,10(19),22-tetraen-24-ol ; Cyclopropanemethanol, a-[(1E,3R)-3-[(1R,3aS,4E,7aR)-4-[(2E)-2-[(3S,5R)-3,5-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methylenecyclohexylidene]ethylidene]octahydro-7a-methyl-1H-inden-1-yl]-1-buten-1-yl]-, (aS)- .