Total synthesis of prolycopene, a novel 7,9,7′,9′-tetra-cis(Z) carotenoid and main pigment of the tangerine tomato Lycopersicon esculentum
作者:Gerald Pattenden、David C. Robson
DOI:10.1016/j.tet.2006.05.023
日期:2006.7
A total synthesis of the 7,9,7′,9′-tetra-cis(Z) isomer of lycopene, also known as ‘prolycopene’, produced as the major carotenoid pigment in fruits of the tangerine tomato Lycopersicon esculentum (‘Tangella’) is described. The synthesis is based on: (i) a modified Sonogashira coupling reaction between the E-alkenyl bromide 6 and the Z-enynol 7, leading to the 2Z-trienynol 8, followed by (ii) a Wittig
番茄红素的7,9,7',9'-四顺式(Z)异构体的全合成,也称为“番茄红素”,是橘番茄番茄中的主要类胡萝卜素色素(“ Tangella” )进行了说明。合成基于:(i)E-烯基溴化物6与Z-烯醇7之间的改性Sonogashira偶联反应,生成2 Z-三烯醇8,然后(ii)salt盐4之间的Wittig反应C 10-三烯二醛5生成对称的9,9'- Z异构体的双-乙炔3和(iii)的半氢化3在林德拉催化剂,和色谱分离的存在。