• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】52558

【品名】2-{7a-methyl-4-[(triethylsilyl)oxy]octahydro-1H-inden-1-yl}propanal

【CA登记号】

【 分 子 式 】C19H36O2Si

【 分 子 量 】324.57914

【元素组成】C 70.31% H 11.18% O 9.86% Si 8.65%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(XXIV)

The intermediate phosphonate (XXI) has been obtained as follows: The reaction of tert-butyl mercaptan (XV) with allyl bromide (XVI) by means of NaOH in ethanol gives the sulfide (XVII), which is oxidized with Oxone in methanol/water to yield the sulfone (XVIII). The bromination of (XVIII) with Br2 in CCl4 followed by dehydrobromination with TEA affords the bromosulfone (XIX), which is finally condensed with tributyl phosphite (XX) by heating at 130 C to provide the target intermediate phosphonate (XXI). The silylation of the known diol (XXII) (obtained by degradation of vitamin D2) with Tes-OTf and lutidine gives the bis silyl ether (XXIII), which is submitted to a Swern oxidation ((COCl)2), yielding the carbaldehyde (XXIV). The Wadsworth-Emmons condensation of aldehyde (XXIV) with the intermediate phosphonate (XXI) by means of tBu-OLi affords the diinsaturated sulfone (XXV), which is desilylated with HF in THF to provide the alcohol (XXVI). The oxidation of (XXVI) with TPAP and NMO furnishes the ketone (XXVII), which is submitted to a Wittig-Horner condensation with the intermediate phosphine oxide (XIV) by means of PhLi, giving the silylated precursor (XXVIII). Finally, this compound is desilylated with HF in ethanol to afford the target vitamin D3 analogue.

1 Posner, G.H.; et al.; A non-calcemic sulfone version of the vitamin D3 analogue seocalcitol (EB 1089): Chemical synthesis, biological evaluation and potency enhancement of the anticancer drug adriamycin. Bioorg Med Chem 2001, 9, 9, 2365.
2 Fall, Y.; A new approach to the synthesis of the 25-hydroxy-22-oxa-vitamin D3 side chain. Tetrahedron Lett 1997, 38, 27, 4909.
3 Lee, J.K.; Crawford, K.R.; Wang, Q.; Posner, G.H.; Han, G. (Johns Hopkins University); Non-calcemic, antiproliferative, transcriptionally active sulfur-containing analogs of 1alpha,25-dihydroxyvitamin D3. US 6380408; WO 0059513 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(XIV) 42574 [2-((3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylenecyclohexylidene)ethyl](oxo)diphenylphosphorane; 2-((3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylenecyclohexylidene)ethyl(diphenyl)phosphine oxide C33H51O3PSi2 详情 详情
(XV) 52551 tert-Butyl mercaptan; 2-Methyl-2-propanethiol 75-66-1 C4H10S 详情 详情
(XVI) 11463 3-Bromo-1-propene; 3-Bromopropene;allyl bromide 106-95-6 C3H5Br 详情 详情
(XVII) 52552 1,1-dimethylethyl 2-propenyl sulfide; 3-[(1,1-dimethylethyl)sulfanyl]-1-propene C7H14S 详情 详情
(XVIII) 52553 (1,1-dimethylethyl)(dioxo)2-propenyl-lambda~6~-sulfane; 1,1-dimethylethyl 2-propenyl sulfone C7H14O2S 详情 详情
(XIX) 52554 (3-bromo-1-propenyl)(1,1-dimethylethyl)dioxo-lambda~6~-sulfane; 3-bromo-1-propenyl 1,1-dimethylethyl sulfone C7H13BrO2S 详情 详情
(XX) 52555 Tri-n-butylphosphite; Tributyl phosphite; Phosphorous acid Tri-N-butyl ester 102-85-2 C12H27O3P 详情 详情
(XXI) 52556 dibutyl 3-[(1,1-dimethylethyl)sulfonyl]-2-propenylphosphonate C15H31O5PS 详情 详情
(XXII) 52151 (1R,3aR,4S,7aR)-1-[(1S)-2-hydroxy-1-methylethyl]-7a-methyloctahydro-1H-inden-4-ol C13H24O2 详情 详情
(XXIII) 52557 7a-methyl-1-{1-methyl-2-[(triethylsilyl)oxy]ethyl}octahydro-1H-inden-4-yl triethylsilyl ether; [(7a-methyl-1-{1-methyl-2-[(triethylsilyl)oxy]ethyl}octahydro-1H-inden-4-yl)oxy](triethyl)silane C25H52O2Si2 详情 详情
(XXIV) 52558 2-{7a-methyl-4-[(triethylsilyl)oxy]octahydro-1H-inden-1-yl}propanal C19H36O2Si 详情 详情
(XXV) 52559 [(1-{5-[(1,1-dimethylethyl)sulfonyl]-1-methyl-2,4-pentadienyl}-7a-methyloctahydro-1H-inden-4-yl)oxy](triethyl)silane; 5-{7a-methyl-4-[(triethylsilyl)oxy]octahydro-1H-inden-1-yl}-1,3-hexadienyl 1,1-dimethylethyl sulfone C26H48O3SSi 详情 详情
(XXVI) 52560 1-{5-[(1,1-dimethylethyl)sulfonyl]-1-methyl-2,4-pentadienyl}-7a-methyloctahydro-1H-inden-4-ol C20H34O3S 详情 详情
(XXVII) 52561 1-{5-[(1,1-dimethylethyl)sulfonyl]-1-methyl-2,4-pentadienyl}-7a-methyloctahydro-4H-inden-4-one C20H32O3S 详情 详情
(XXVIII) 52562 (1,1-dimethylethyl)({3-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-5-[2-(1-{5-[(1,1-dimethylethyl)sulfonyl]-1-methyl-2,4-pentadienyl}-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene]-4-methylidenecyclohexyl}oxy)dimethylsilane; 5-{4-[2-(3,5-bis{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-2-methylidenecyclohexylidene)ethylidene]-7a-methyloctahydro-4H-inden-1-yl}-1,3-hexadienyl 1,1-dimethylethyl sulfone C41H72O4SSi2 详情 详情
Extended Information