描述了从麦角固醇开始相对短的昆虫蜕皮激素蜕皮激素及其C-22异构体的合成。关键一步是将3α,5α-cycloergosta-7,22-dien-6-one(5)直接转化为14α-和14β-ergosta-2,7,22-trien-6-ones(11 and 12)。2-烯的选择性顺式-羟基化,然后烯醇乙酰化和用邻苯二甲酸氧化,得到5α-蜕皮酮核。C-22双键的臭氧分解反应得到(20 S)-2β,3β-二乙酰氧基-20-甲酰基-14α-羟基-5α-pregn-7-en-6-one,与蜕皮激素侧链相连已知的方式。
[EN] PHARMACEUTICAL COMPOSITION COMPRISING AN EXTRACT OR COMPOUNDS ISOLATED FROM ELFVINGIA APPLANATA FOR THE PREVENTION AND THE TREATMENT OF DIABETES AND DIABETIC COMPLICATIONS<br/>[FR] COMPOSITION PHARMACEUTIQUE CONTENANT UN EXTRAIT OU DES COMPOSES ISOLES A PARTIR DE ELFVINGIA APPLANATA DESTINEE A LA PREVENTION OU AU TRAITEMENT DU DIABETE ET DE COMPLICATIONS DIABETIQUES
申请人:SON DAL-HOON
公开号:WO2004067009A1
公开(公告)日:2004-08-12
The present invention relates to a non-polar solvent soluble extract, polyphenol fractions therefrom and the compounds isolated from Elfvingia applanata, which shows a therapeutic activity for diabetes and diabetic complications, and a pharmaceutical composition for the treatment of diabetes and diabetic complications comprising the same.
A synthesis of the insect moulting hormone, ecdysone, and related compounds
作者:D. H. R. Barton、P. G. Feakins、J. P. Poyser、P. G. Sammes
DOI:10.1039/j39700001584
日期:——
relatively short synthesis of the insectmoultinghormone, ecdysone, and of its C-22 isomer is described, starting from ergosterol. A key step is the direct transformation of the 3α,5α-cycloergosta-7,22-dien-6-one (5) into the 14α- and 14β-ergosta-2,7,22-trien-6-ones (11 and 12). Selective cis-hydroxylation of the 2-enes, followed by enol acetylation and oxidation with perphthalic acid afforded the
描述了从麦角固醇开始相对短的昆虫蜕皮激素蜕皮激素及其C-22异构体的合成。关键一步是将3α,5α-cycloergosta-7,22-dien-6-one(5)直接转化为14α-和14β-ergosta-2,7,22-trien-6-ones(11 and 12)。2-烯的选择性顺式-羟基化,然后烯醇乙酰化和用邻苯二甲酸氧化,得到5α-蜕皮酮核。C-22双键的臭氧分解反应得到(20 S)-2β,3β-二乙酰氧基-20-甲酰基-14α-羟基-5α-pregn-7-en-6-one,与蜕皮激素侧链相连已知的方式。