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【结 构 式】

【分子编号】52863

【品名】(3R,4S,5S,6R)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-1-oxaspiro[2.5]octane-5,6-diol

【CA登记号】

【 分 子 式 】C15H24O3

【 分 子 量 】252.35376

【元素组成】C 71.39% H 9.59% O 19.02%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(XXXVI)

The primary alcohol group of (XXXIV) was selectively converted to mesylate (XXXV), which was subsequently treated with methanolic NaOH to afford the spiro-epoxide (XXXVI). Sharpless epoxidation of diene (XXXVI) in the presence of tert-butyl hydroperoxide and vanadyl acetylacetonate gave rise to the bis-epoxide (XXXVII) as the major diastereoisomer. Finally, regioselective hydroxyl group alkylation in (XXXVII) under Williamson's synthesis conditions furnished the racemic fumagillol (+/-)-(XXII).

1 Vosburg, D.A.; et al.; A concise synthesis of fumagillol. Angew Chem. Int Ed 1999, 38, 7, 971.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(XXII) 13712 (3R,4S,5S,6R)-5-Methoxy-4-[(2R,3R)-2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2.5]octan-6-ol C16H26O4 详情 详情
(XXXIV) 52861 (1R,2S,3S,4R)-3-[(1E)-1,5-dimethyl-1,4-hexadienyl]-4-(hydroxymethyl)-1,2,4-cyclohexanetriol C15H26O4 详情 详情
(XXXV) 52862 {(1R,2S,3S,4R)-2-[(1E)-1,5-dimethyl-1,4-hexadienyl]-1,3,4-trihydroxycyclohexyl}methyl methanesulfonate C16H28O6S 详情 详情
(XXXVI) 52863 (3R,4S,5S,6R)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-1-oxaspiro[2.5]octane-5,6-diol C15H24O3 详情 详情
(XXXVII) 52864 (3R,4S,5S,6R)-4-[(2R,3R)-2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2.5]octane-5,6-diol C15H24O4 详情 详情

合成路线2

该中间体在本合成路线中的序号:(XVII)

The cyclization of the chiral diene (I) with acrolein (II) by means of BF3/Et2O in dichloromethane gives the chiral cyclohexene (III), which is dihydroxylated under Upjohn conditions (OsO4) yielding the dihydroxy compound (IV). The reaction of (IV) with acetone (V) and TsOH affords the isopropylidene derivative (VI), which is treated with NaOH in THF/water to eliminate the chiral auxiliary to yield the cyclohexene carbaldehyde (VII). The regio- and diastereoselective condensation of (VII) with bromide (VIII) by means of t-BuLi and BF3/Et2O affords the adduct (IX), which is treated with N-cyclohexyl-hydroxylamine (X) to provide the nitrone (XI). The reaction of (XI) with acetyl chloride gives the alpha-acetoxy-N-cyclohexylimine (XIII), through the intermediate (XII). The hydrolysis of (XIII) with AcOH and NaOAc yields the carbaldehyde (XIV), which is reduced with LiAlH4 in ethanol to afford the hydroxymethyl derivative (XV). The hydrolysis of the acetoxy and isopropylidene groups of (XV) by means of HCl in THF provides the tetrahydroxy derivative (XVI), which is converted into the epoxide (XVII) by a treatment with MsCl, TEA, DMAP and NaOH in dichloromethane. A new epoxidation of (XVII) by means of VO(acac)2 and t-BuOOH in benzene gives the bis-epoxide compound (XVIII), which is finally monomethylated by means of t-BuONa and MeI in THF to yield the target intermediate fumagillol (XIX).

1 Vosburg, D.A.; et al.; Concise stereocontrolled routes to fumagillol, fumagillin, and TNP-470. Chirality 2003, 15, 2, 156.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 61435 (4S)-3-[(1E)-1,3-butadienyl]-4-phenyl-1,3-oxazolidin-2-one C13H13NO2 详情 详情
(II) 17668 acrylaldehyde; Acrolein 107-02-8 C3H4O 详情 详情
(III) 61436 (1R,2S)-2-[(4S)-2-oxo-4-phenyl-1,3-oxazolidin-3-yl]-3-cyclohexene-1-carbaldehyde C16H17NO3 详情 详情
(IV) 61437 (1R,2S,3S,4R)-3,4-dihydroxy-2-[(3R,4S)-2-oxo-4-phenyltetrahydro-3-furanyl]cyclohexanecarbaldehyde C17H20O5 详情 详情
(V) 23199 2-Propanone; Acetone; beta-ketopropane; chevron acetone;propan-2-one; Dimethyl formaldehyde; Dimethyl ketone; dimethylketal; Ketone propane; Methyl ketone; Propanone; Pyroacetic acid; Pyroacetic ether 67-64-1 C3H6O 详情 详情
(VI) 61438 (3aS,4S,5R,7aR)-2,2-dimethyl-4-[(3R,4S)-2-oxo-4-phenyltetrahydro-3-furanyl]hexahydro-1,3-benzodioxole-5-carbaldehyde C20H24O5 详情 详情
(VII) 52852 (3aS,7aR)-2,2-dimethyl-3a,6,7,7a-tetrahydro-1,3-benzodioxole-5-carbaldehyde C10H14O3 详情 详情
(VIII) 52853 (2E)-2-bromo-6-methyl-2,5-heptadiene C8H13Br 详情 详情
(IX) 52855 (3aS,4S,5S,7aR)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-2,2-dimethylhexahydro-1,3-benzodioxole-5-carbaldehyde C18H28O3 详情 详情
(X) 52856 N-Cyclohexylhydroxylamine C6H13NO 详情 详情
(XI) 61439 ((Z)-{(3aS,4S,5S,7aR)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-2,2-dimethylhexahydro-1,3-benzodioxol-5-yl}methylidene)(cyclohexyl)ammoniumolate C24H39NO3 详情 详情
(XII) 52858 (3aS,4R,7aR)-5-{(E)-[(acetyloxy)(cyclohexyl)amino]methylidene}-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-2,2-dimethylhexahydro-1,3-benzodioxole C26H41NO4 详情 详情
(XIII) 61440 (3aS,4S,5R,7aR)-5-[(cyclohexylimino)methyl]-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-2,2-dimethylhexahydro-1,3-benzodioxol-5-yl acetate C26H41NO4 详情 详情
(XIV) 61441 (3aS,4S,5R,7aR)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-5-formyl-2,2-dimethylhexahydro-1,3-benzodioxol-5-yl acetate C20H30O5 详情 详情
(XV) 61442 (3aS,4S,5R,7aR)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-5-(hydroxymethyl)-2,2-dimethylhexahydro-1,3-benzodioxol-5-yl acetate C20H32O5 详情 详情
(XVI) 52861 (1R,2S,3S,4R)-3-[(1E)-1,5-dimethyl-1,4-hexadienyl]-4-(hydroxymethyl)-1,2,4-cyclohexanetriol C15H26O4 详情 详情
(XVII) 52863 (3R,4S,5S,6R)-4-[(1E)-1,5-dimethyl-1,4-hexadienyl]-1-oxaspiro[2.5]octane-5,6-diol C15H24O3 详情 详情
(XVIII) 52864 (3R,4S,5S,6R)-4-[(2R,3R)-2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2.5]octane-5,6-diol C15H24O4 详情 详情
(XIX) 13712 (3R,4S,5S,6R)-5-Methoxy-4-[(2R,3R)-2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2.5]octan-6-ol C16H26O4 详情 详情
Extended Information