Z-Selective intramolecular Horner–Wadsworth–Emmons reaction for the synthesis of macrocyclic alkenes
摘要:
The Z-selective intramolecular Horner-Wadsworth-Emmons reaction of the substrates 7-12 (RO)(2)P(O)CHR'CO(2)Et (R' = (CH(2))(n)CHO) (R = Ph or o-tBuC(6)H(4)) gives the 13-18-membered cyclic alkenes selectively (up to Z:E = 97:3) in good yields using NaH in THF under high dilution conditions. (C) 2011 Elsevier Ltd. All rights reserved.
MANUFACTURING METHOD FOR HIGH-PURITY CYCLOHEXENONE LONG-CHAIN ALCOHOL
申请人:TAIHO PHARMACEUTICAL CO., LTD.
公开号:US20210101859A1
公开(公告)日:2021-04-08
This invention relates to a method for producing a high-purity cyclohexenone long-chain alcohol represented by formula I, and produces the compound of formula I by a metal-mediated Barbier reaction. The method of the present invention has advantages in its short scheme, high yield, and high-purity product, and is suitable for industrial scale up.
[EN] MANUFACTURING METHOD FOR HIGH-PURITY CYCLOHEXENONE LONG-CHAIN ALCOHOL<br/>[FR] PROCÉDÉ DE FABRICATION D'UN ALCOOL À CHAÎNE LONGUE CYCLOHEXÉNONE DE GRANDE PURETÉ<br/>[ZH] 一种高纯度环己烯酮长链醇的制备方法
[EN] METHOD FOR PREPARING HIGH-PURITY CYCLOHEXENONE LONG-CHAIN ALCOHOL<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN ALCOOL À LONGUE CHAÎNE DE CYCLOHEXÉNONE DE GRANDE PURETÉ<br/>[ZH] 一种高纯度环己烯酮长链醇的制备方法
Inhibitors of alpha-amylase have attracted attention for their putative effects against diabetes mellitus. Although numerous studies have explored natural small molecule inhibitors, acarbose is currently the only compound with sufficient inhibitory potency and drug-like characteristics to be considered as a potential therapeutic agent. We have synthesized conjugates of the potent glucosidase inhibitor, 1-deoxynojirimycin, and glucose, with the aim of enhancing inhibitory activity against alpha-amylase. This synthetic conjugate showed increased inhibition of alpha-amylase compared to 1-deoxynojirimycin alone, suggesting that similar modifications of existing glucosidase inhibitors may yield more potent alpha-amylase inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.