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【结 构 式】

【分子编号】64102

【品名】(2S)-2-{(1R)-1-[(1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]ethyl}oxirane

【CA登记号】

【 分 子 式 】C16H26O

【 分 子 量 】234.38184

【元素组成】C 81.99% H 11.18% O 6.83%

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:(V)

The title compound is prepared starting from artemisinic acid (I), which is extracted from the leaves of Artemisia annua. Esterification of (I) with ethereal diazomethane affords methyl ester (II). Reduction of (II) by means of lithium or sodium borohydride and NiCl2 leads to the saturated ester (III), which is further reduced with DIBAL to the aldehyde (IV). Condensation of (IV) with the sulfur ylide generated from trimethylsulfonium iodide and KOH furnishes epoxide (V). Then, epoxide ring opening with the Grignard reagent (VI) gives alcohol (VII). Photooxigenative cyclization of (VII) produces the artemisinin derivative (VIII). Finally, oxidative vinyl group cleavage employing KMnO4 yields the target carboxylic acid. (1,2)

1 McChesney, J.D.; Jung, M.; Method of preparing (+)-deoxoartemisinin and selected analogues of (+)-deoxoartemisinin. US 5225562 .
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) 10222 2-[(1R,4R,4aS,8aR)-4,7-Dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]acrylic acid; Artemisinic acid C15H22O2 详情 详情
(II) 64099 methyl 2-[(1R,4R,4aS,8aR)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]acrylate C16H24O2 详情 详情
(III) 10235 methyl 2-[(1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]propanoate C16H26O2 详情 详情
(IV) 64101 (2R)-2-[(1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]propanal C15H24O 详情 详情
(V) 64102 (2S)-2-{(1R)-1-[(1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]ethyl}oxirane C16H26O 详情 详情
(VI) 64103 chloro(4-vinylbenzyl)magnesium C9H9ClMg 详情 详情
(VII) 64104 (3R,4R)-4-[(1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydro-1-naphthalenyl]-1-(4-vinylphenyl)-3-pentanol C25H36O 详情 详情
(VIII) 64105 10-[2-(4-ethenylphenyl)ethyl]-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.0~4,13~.0~8,13~]hexadecane C25H34O4 详情 详情
Extended Information