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CAS No.: | 72962-43-7 |
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Name: | Brassinolide |
Article Data: | 18 |
Molecular Structure: | |
Formula: | C28H48O6 |
Molecular Weight: | 480.686 |
Synonyms: | B-Homo-7-oxaergostan-6-one,2,3,22,23-tetrahydroxy-, (2a,3a,5a,22R,23R,24S)-;6H-Benz[c]indeno[5,4-e]oxepin-6-one,1-(2,3-dihydroxy-1,4,5-trimethylhexyl)hexadecahydro-8,9-dihydroxy-10a,12a-dimethyl-,[1R-[1a(1S*,2R*,3R*,4S*),3ab,3ba,6ab,8b,9b,10aa,10bb,12aa]]-;Brassinolide (BR);Brassinolide; |
Density: | 1.142 g/cm3 |
Melting Point: | 200-204 °C |
Boiling Point: | 633.716 °C at 760 mmHg |
Flash Point: | 202.262 °C |
Solubility: | soluble in methanol, ethanol, acetone and tetrahydrofuran |
Appearance: | Off-White Solid |
Safety: | 24/25 |
PSA: | 107.22000 |
LogP: | 3.39000 |
2α,3α-22R,23R-tetraacetoxy-B-homo-7-oxa-24S-methyl-5α-cholestan-6-one
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
With potassium hydroxide In methanol for 1h; Heating; | 94% |
With sodium hydroxide In methanol; water for 3h; Heating; | 57% |
With hydrogenchloride; methanol; potassium hydroxide 1.) reflux, 1 h, 2.) room temperature, 1 h; Yield given. Multistep reaction; | |
Multi-step reaction with 2 steps 1: NaOH 2: HCl View Scheme |
(2R,3S,5S,8S,9S,10R,13S,14S,17R)-17-{(S)-1-[(4R,5R)-5-((S)-1,2-Dimethyl-propyl)-2,2-dimethyl-[1,3]dioxolan-4-yl]-ethyl}-2,3-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-6-one
A
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
B
(22R,23R,24S)-2α,3α,22,23-tetrahydroxy-6-oxa-7a-homo-5α-campestan-7-one
Conditions | Yield |
---|---|
With trifluoroacetyl peroxide In dichloromethane at 22℃; for 1h; | A 74% B n/a |
(2R,3S,5α,22R,23R,24S)-6,6-Ethylenedioxy-2,3-isopropylidenedioxyergostane-22,23-diol
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
With trifluoroacetyl peroxide; trifluoroacetic acid In chloroform for 3h; Ambient temperature; | 53% |
Multi-step reaction with 3 steps 1: 7.62 g / 80percent AcOH / H2O / 1 h / 50 - 60 °C 2: pyridine, N,N-dimethylaminopyridine View Scheme |
3-dehydroteasterone
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
With amalgamated zinc; osmium(VIII) oxide; chloro-trimethyl-silane; trifluoroacetyl peroxide; 4-methylmorpholine N-oxide 1.) THF, rt., 12 h; 2.) THF, aq. t-BuOH; 3.) CH2Cl2; Yield given. Multistep reaction; |
castasterone
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
Yield given. Multistep reaction; | |
Multi-step reaction with 2 steps 1: pyridine, N,N-dimethylaminopyridine View Scheme |
2,3,22,23-tetra-O-acetylcastasterone
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
Acetic acid (1R,2R,3S)-2-acetoxy-1-[(S)-1-((1R,3aS,3bS,6aS,8S,9R,10aR,10bS,12aS)-8,9-dihydroxy-10a,12a-dimethyl-6-oxo-hexadecahydro-5-oxa-benzo[3,4]cyclohepta[1,2-e]inden-1-yl)-ethyl]-3,4-dimethyl-pentyl ester
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
With sodium hydroxide In methanol for 3h; Heating; | 1.79 g |
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
---|---|
With hydrogenchloride |
(1R,3aS,3bS,5aS,6aS,9aR,10aR,10bS,12aS)-1-{(S)-1-[(4R,5R)-5-((S)-1,2-Dimethyl-propyl)-2,2-dimethyl-[1,3]dioxolan-4-yl]-ethyl}-8,8,10a,12a-tetramethyl-hexadecahydro-7,9-dioxa-dicyclopenta[a,h]phenanthren-5-one
A
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
B
(22R,23R,24S)-2α,3α,22,23-tetrahydroxy-6-oxa-7a-homo-5α-campestan-7-one
Conditions | Yield |
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Yield given. Multistep reaction. Yields of byproduct given; |
(20S)-6,6-ethylenedioxy-2α,3α-isopropylidenedioxy-5α-pregnane-20-carbaldehyde
(3α,5α,6α,8β,9α,12β,13β,16α,17β)-10-[(2'α,3'β,4'β,5'β)-3,4-dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one
Conditions | Yield |
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Multi-step reaction with 4 steps 1: 1.) n-BuLi, 2.) 30percent H2O2 / 1.) THF, -78 deg C, 3 h, 2.) acetic acid, room temperature, 15 h 2: 85 percent / Ti(O-iPr)4, (+)-L-diethyl tartrate, cumene hydroperoxide, 4 Angstroem MS / CH2Cl2 / 144 h / -25 °C 3: 82 percent / CuCN / diethyl ether / 1.) -78 deg C, 2 h, 2.) 0 deg C, 3 h 4: 53 percent / CF3CO3H, CF3CO2H / CHCl3 / 3 h / Ambient temperature View Scheme | |
Multi-step reaction with 8 steps 1: n-BuLi / tetrahydrofuran; hexane / -50 to -60 deg C; -40 deg C, 1 h; -68 to - 65 deg C, 1 h; 0 deg C 2: 74.6 percent / 1.) triphenylphosphine, benzoic acid, diethyl azodicarboxylate; 2.) K2CO3 / 1.) THF, 5-10 deg C, 30 min; 2.) THF/methanol, reflux, 3 h 3: 44.3 g / H2, 1M NaBH4, ethylenediamine, nickel acetate / aq. ethanol / 5 h 4: 93 percent / m-chloroperbenzoic acid, Na2HPO4 / CH2Cl2 / 20 h / 5 °C 5: n-BuLi / hexane; cyclohexane / -70 deg C, 1 h; 10 deg C, 4 h 6: 7.62 g / 80percent AcOH / H2O / 1 h / 50 - 60 °C 7: pyridine, N,N-dimethylaminopyridine View Scheme | |
Multi-step reaction with 7 steps 1: 26.93 g / n-BuLi / tetrahydrofuran; hexane / -50 to -60 deg C; -40 deg C, 1 h; -68 to - 65 deg C, 1 h; 0 deg C 2: 44.3 g / H2, 1M NaBH4, ethylenediamine, nickel acetate / aq. ethanol / 5 h 3: 93 percent / m-chloroperbenzoic acid, Na2HPO4 / CH2Cl2 / 20 h / 5 °C 4: n-BuLi / hexane; cyclohexane / -70 deg C, 1 h; 10 deg C, 4 h 5: 7.62 g / 80percent AcOH / H2O / 1 h / 50 - 60 °C 6: pyridine, N,N-dimethylaminopyridine View Scheme |
The Brassinolide, with the CAS registry number 72962-43-7, is also known as B-Homo-7-oxaergostan-6-one,2,3,22,23-tetrahydroxy-, (2a,3a,5a,22R,23R,24S)-. It belongs to the product categories of Bio-Pesticide; Intermediates & Fine Chemicals; Pharmaceuticals; Steroids. This chemical's molecular formula is C28H48O6 and molecular weight is 480.68. What's more, its systematic name is (3aS,5S,6R,7aR,7bS,9aS,10R,12aS,12bS)-10-[(2S,3R,4R,5S)-3,4-Dihydroxy-5,6-dimethyl-2-heptanyl]-5,6-dihydroxy-7a,9a-dimethylhexadecahydro-3H-benzo[c]indeno[5,4-e]oxepin-3-one. Its classification codes are: (1)Growth Substances; (2)Plant Growth Regulators. This chemical is a plant hormone. The first isolated brassinosteroid, it was discovered when it was shown that pollen from rapeseed (Brassica napus) could promote stem elongation and cell division. The biologically active component was isolated and named brassinolide.
Physical properties of Brassinolide are: (1)ACD/LogP: 3.471; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.47; (4)ACD/LogD (pH 7.4): 3.47; (5)ACD/BCF (pH 5.5): 255.94; (6)ACD/BCF (pH 7.4): 255.94; (7)ACD/KOC (pH 5.5): 1842.26; (8)ACD/KOC (pH 7.4): 1842.26; (9)#H bond acceptors: 6; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 9; (12)Polar Surface Area: 107.22 Å2; (13)Index of Refraction: 1.536; (14)Molar Refractivity: 131.257 cm3; (15)Molar Volume: 421.056 cm3; (16)Polarizability: 52.035×10-24cm3; (17)Surface Tension: 45.8 dyne/cm; (18)Density: 1.142 g/cm3; (19)Flash Point: 202.262 °C; (20)Enthalpy of Vaporization: 107.343 kJ/mol; (21)Boiling Point: 633.716 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C3OC[C@H]2[C@@H]1CC[C@@H]([C@@]1(C)CC[C@@H]2[C@@]4(C)C[C@@H](O)[C@@H](O)C[C@H]34)[C@H](C)[C@@H](O)[C@H](O)[C@@H](C)C(C)C
(2)Std. InChI: InChI=1S/C28H48O6/c1-14(2)15(3)24(31)25(32)16(4)18-7-8-19-17-13-34-26(33)21-11-22(29)23(30)12-28(21,6)20(17)9-10-27(18,19)5/h14-25,29-32H,7-13H2,1-6H3/t15-,16-,17-,18+,19-,20-,21+,22-,23+,24+,25+,27+,28+/m0/s1
(3)Std. InChIKey: IXVMHGVQKLDRKH-KNBKMWSGSA-N