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【结 构 式】

【分子编号】52602

【品名】8-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-4-nonene-1,7-diol

【CA登记号】

【 分 子 式 】C15H32O3Si

【 分 子 量 】288.50278

【元素组成】C 62.45% H 11.18% O 16.64% Si 9.73%

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:(XII)

The silylation of the epoxide (VII) with Tbdms-Cl gives the silyl ether (VIII), which is condensed with alkynyl aluminum (X) (obtained by reaction of 5-(tert-butyldimethylsilyloxy)-1-pentyne (IX) with dimethylaluminum and BuLi) in toluene, followed by treatment with HOAc to yield the unsaturated diol (XI). The controlled hydrogenation of the triple bond of (XI) with H2 over Lindlar catalyst affords the (Z)-olefin (XII), which is treated with Ts-Cl to provide the monotosylate (XIII). The silylation of the remaining OH group of (XIII) with Tms-OTf gives the fully protected triol (XIV), which is treated with NaI in refluxing acetone to yield the iodide (XV). The condensation of (XV) with the chiral amide (XVI) by means of BuLi in THF/HMPA affords the adduct (XVII), which by elimination of the chiral auxiliary by reduction with DIBAL in dichloromethane, followed by controlled oxidation with SO3/pyridine, provides the aldehyde (XVIII). The aldol condensation of aldehyde (XVIII) with the intermediate oxoacid (VI) by means of LDA in THF gives the heptadecanoic acid (XIX), which is fully silylated with Tbdms-OTf and lutidine, yielding the silylated silyl ester (XX). Selective elimination of the Tms and ester-Tbdms- groups with aqueous HOAc affords the hydroxyacid (XXI).

1 Hindupur, R.M.; et al.; Total synthesis of epothilone A. Tetrahedron Lett 2001, 42, 42, 7341.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VI) 43166 (3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-4,4-dimethyl-5-oxoheptanoic acid C15H30O4Si 详情 详情
(VII) 52597 1-(2-oxiranyl)-1-ethanol C4H8O2 详情 详情
(VIII) 52598 (1,1-dimethylethyl)(dimethyl)((1-(2-oxiranyl)ethyl)oxy)silane; (1,1-dimethylethyl)(dimethyl)silyl 1-(2-oxiranyl)ethyl ether C10H22O2Si 详情 详情
(IX) 52599 4-pentynyl trimethylsilyl ether; trimethyl(4-pentynyloxy)silane C8H16OSi 详情 详情
(X) 52600 dimethyl{5-[(trimethylsilyl)oxy]-1-pentynyl}aluminium C10H21AlOSi 详情 详情
(XI) 52601 8-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-4-nonyne-1,7-diol C15H30O3Si 详情 详情
(XII) 52602 8-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-4-nonene-1,7-diol C15H32O3Si 详情 详情
(XIII) 52603 8-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-7-hydroxy-4-nonenyl 4-methylbenzenesulfonate C22H38O5SSi 详情 详情
(XIV) 52604 8-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-7-[(trimethylsilyl)oxy]-4-nonenyl 4-methylbenzenesulfonate C25H46O5SSi2 详情 详情
(XV) 52605 4-(6-iodo-2-hexenyl)-2,2,5,7,7,8,8-heptamethyl-3,6-dioxa-2,7-disilanonane; (1,1-dimethylethyl)(dimethyl)silyl 8-iodo-1-methyl-2-[(trimethylsilyl)oxy]-4-octenyl ether C18H39IO2Si2 详情 详情
(XVI) 52606   C13H21NO3S 详情 详情
(XVII) 52607   C31H59NO5SSi2 详情 详情
(XVIII) 52608 10-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-2-methyl-9-[(trimethylsilyl)oxy]-6-undecenal C21H44O3Si2 详情 详情
(XIX) 52609 3,16-bis{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-7-hydroxy-4,4,6,8-tetramethyl-5-oxo-15-[(trimethylsilyl)oxy]-12-heptadecenoic acid C36H74O7Si3 详情 详情
(XX) 52610 (1,1-dimethylethyl)(dimethyl)silyl 3,7,16-tris{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-4,4,6,8-tetramethyl-5-oxo-15-[(trimethylsilyl)oxy]-12-heptadecenoate C48H102O7Si5 详情 详情
(XXI) 52612 3,7,16-tris{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-15-hydroxy-4,4,6,8-tetramethyl-5-oxo-12-heptadecenoic acid C39H80O7Si3 详情 详情
Extended Information