Easy Preparation Method for 2-Thioxopyrrolidine Derivatives Including 3-Hydroxy- methylene-2-thioxopyrrolidine, an Antimicrobial Degradation Product of Radish Pungent Principle,<i>via</i>(<i>E,Z</i>)-4-Ylethoxy-3-butenyl Isothiocyanate
作者:Hiroki Matsuoka、Yasushi Uda、Kazunori Mitani、Koichi Yoneyama、Yasuhiko Maeda
DOI:10.1271/bbb.60.914
日期:1996.1
An easy preparation method was developed for 3-hydroxymethylene-2-thioxopyrrolidine (TPC), an antimicrobial degradation product of radish pungent principle. The key intermediate, 4- methoxy-3-butenyl-isothiocyanate (MBI), which was prepared from 3-cyanopropionaldehyde dimethyl acetal in 3 reaction steps, was easily converted to TPC in acidic (pH 3.0-4.0) aqueous media. In methanol or ethanol with a
开发了一种简便的制备方法,用于3-辛基-2-硫代吡咯烷(TPC),这是一种基于辣味辛辛酸的抗微生物降解产物。在3个反应步骤中,由3-氰基丙醛二甲基乙缩醛制得的关键中间体4-甲氧基-3-丁烯基-异硫氰酸酯(MBI)易于在酸性(pH 3.0-4.0)水性介质中转化为TPC。在甲醇或乙醇中加几滴乙酸,MBI得到相应的3-(α,α-二烷氧基)甲基-2-硫代吡咯烷酮作为主要产物。