A new approach to annelated butenolides. The total synthesis of (±)-isodrimenin
作者:B. J. M. Jansen、R. M. Peperzak、Ae. de Groot
DOI:10.1002/recl.19871060906
日期:——
A newapproach to annelated butenolides has been developed starting from trans-5,5,8a-trimethyl-3,4,4a,5,6,7,8,8a-octahydro-1(2H)-naphthalenone (3) and cyclohexanones. A reaction sequence consisting of formylation of the enolates of these ketones, protection of the formyl group as its dioxolane and addition of methoxy(phenylthio)methyllithium has been used to introduce the necessary functionalized
A regioselective annulation of butenolides. The total synthesis of (±) confertifolin
作者:Ben J.M. Jansen、Catharina T. Bouwman、Aede de Groot
DOI:10.1016/s0040-4039(00)76676-7
日期:1994.5
gamma-(Phenylsulfinyl)-alpha,beta-unsaturated aldehydes 2, prepared from alpha-(n-butyl-thio)methylene ketones 1 via addition of [(phenylthio)methyl]lithium followed by hydrolysis and oxidation, are converted into butenolides 4 or 5 depending upon the reaction conditions.
Jommi, G.; Pagliarin, R.; Sisti, M., Synthetic Communications, 1989, vol. 19, # 13-14, p. 2467 - 2480
作者:Jommi, G.、Pagliarin, R.、Sisti, M.、Tavecchia, P.