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【结 构 式】

【分子编号】53768

【品名】(2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl phenyl sulfone; {(2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl}(dioxo)phenyl-lambda~6~-sulfane

【CA登记号】n/a

【 分 子 式 】C29H42O3S

【 分 子 量 】470.71668

【元素组成】C 74% H 8.99% O 10.2% S 6.81%

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:(LXXXVIII)

A stereoselective synthesis of the (24R)-epimer of squalamine dessulfate (CIII) has been reported starting from stigmasterol (LXXXII). Tosylate (LXXXIII) prepared from (LXXXII) was rearranged in the presence of potassium acetate in methanol to afford the cyclopropane compound (LXXXIV). Ozonization of the double bond produced aldehyde (LXXXV), which was subsequently reduced to alcohol (LXXXVI) by means of NaBH4. The primary alcohol (LXXXVI) was converted into the corresponding mesylate, which was further displaced by NaI to provide the alkyl iodide (LXXXVII). Condensation of iodide (LXXXVII) with sodium benzenesulfinate furnished sulfone (LXXXVIII).

1 Moriarty, R.M.; et al.; Stereoselective synthesis of squalamine dessulfate. Tetrahedron Lett 1995, 36, 29, 5139.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(LXXXII) 53762 (3S,8S,9S,10R,13R,14S,17R)-17-[(1R,2E,4S)-4-ethyl-1,5-dimethyl-2-hexenyl]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol n/a C29H48O 详情 详情
(LXXXIII) 53763 (3S,8S,9S,10R,13R,14S,17R)-17-[(1R,2E,4S)-4-ethyl-1,5-dimethyl-2-hexenyl]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl 4-methylbenzenesulfonate n/a C36H54O3S 详情 详情
(LXXXIV) 53764 (1aR,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-[(1R,2E,4S)-4-ethyl-1,5-dimethyl-2-hexenyl]-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-10-yl methyl ether; (1aR,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-[(1R,2E,4S)-4-ethyl-1,5-dimethyl-2-hexenyl]-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene n/a C30H50O 详情 详情
(LXXXV) 53765 (2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propanal n/a C23H36O2 详情 详情
(LXXXVI) 53766 (2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]-1-propanol n/a C23H38O2 详情 详情
(LXXXVII) 53767 (1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-6-[(1S)-2-iodo-1-methylethyl]-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-10-yl methyl ether; (1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-6-[(1S)-2-iodo-1-methylethyl]-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene n/a C23H37IO 详情 详情
(LXXXVIII) 53768 (2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl phenyl sulfone; {(2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl}(dioxo)phenyl-lambda~6~-sulfane n/a C29H42O3S 详情 详情

合成路线2

该中间体在本合成路线中的序号:(LXXXVII)

Diazotization of (S)-valine (LXXXIX) gave rise to the alpha-hydroxyacid (XC), which was reduced to diol (XCI) using LiAlH4. Tosylation of the primary hydroxyl of (XCI), followed by cyclization of the resulting tosylate (XCII) under basic conditions, furnished epoxide (XCIII). Condensation of epoxide (XCIII) with the lithium anion derived from sulfone (LXXXVIII) gave adduct (XCIV). Reductive elimination of the phenylsulfonyl group and then acidic rearrangement of the cyclopropane ring provided the dihydroxy steroid (XCV). After protection of (XCV) as the diacetate (XCVI), allylic oxidation with CrO3 in the presence of dimethylpyrazole yielded enone (XCVII).

1 Moriarty, R.M.; et al.; Stereoselective synthesis of squalamine dessulfate. Tetrahedron Lett 1995, 36, 29, 5139.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(LXXXVII) 53768 (2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl phenyl sulfone; {(2S)-2-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]propyl}(dioxo)phenyl-lambda~6~-sulfane n/a C29H42O3S 详情 详情
(LXXXIX) 37828 L-2-Amino-3-methylbutyric acid; L-2-Aminoisovaleric acid; 2-Aminoisovaleric acid; L-2-Amino-3-methylbutyric acid; L-alpha-Aminoisovaleric acid; L-valine; (S)-(+)-Valine; (S)-alpha-Aminoisovaleric acid 72-18-4 C5H11NO2 详情 详情
(XC) 37829 (2S)-2-hydroxy-3-methylbutyric acid C5H10O3 详情 详情
(XCI) 53769 (2S)-3-methyl-1,2-butanediol n/a C5H12O2 详情 详情
(XCII) 53770 (2S)-2-hydroxy-3-methylbutyl 4-methylbenzenesulfonate n/a C12H18O4S 详情 详情
(XCIII) 53771 (2S)-2-isopropyloxirane 123731-68-0 C5H10O 详情 详情
(XCIV) 53772 (3R,6S)-6-[(1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethylhexadecahydrocyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl]-2-methyl-5-(phenylsulfonyl)-3-heptanol n/a C34H52O4S 详情 详情
(XCV) 53773 (3S,8S,9S,10R,13R,14S,17R)-17-[(1R,4R)-4-hydroxy-1,5-dimethylhexyl]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol n/a C27H46O2 详情 详情
(XCVI) 53774 (3S,8S,9S,10R,13R,14S,17R)-17-[(1R,4R)-4-(acetyloxy)-1,5-dimethylhexyl]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate n/a C31H50O4 详情 详情
(XCVII) 53775 (3S,8S,9S,10R,13R,14S,17R)-17-[(1R,4R)-4-(acetyloxy)-1,5-dimethylhexyl]-10,13-dimethyl-7-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate C31H48O5 详情 详情
Extended Information