从一种罂粟属Lindl中分离出了相对较大量的Alpinigenine(1)。来自伊朗。用琼斯试剂氧化该生物碱产生内酯功能,并且出乎意料地将NMe转化为NCHO,以旋转异构体的混合物形式存在。结晶得到一种纯组分,其在溶液中在2小时内平衡。使用13 C Nmr光谱法确认了这些结果,并能够洞察到芹菜碱及其氧化产物中七元环溶液的构象。X射线分析清楚地确定了芹菜碱的绝对构型。
Alpinigenine from Papaver bracteatum Lindl. Restricted rotation in an unusual oxidation product
作者:David Lavie、Hana Berger-Josephs、Tamar Yehezkel、Hugo E. Gottlieb、Elie C. Levy
DOI:10.1039/p19810001019
日期:——
Alpinigenine (1) was isolated in relatively large amount from a type of PapaverbracteatumLindl. from Iran. Oxidation of this alkaloid with Jones reagent produced a lactone function and, unexpectedly, converted the NMe into an NCHO, present as a mixture of rotamers. Crystallization afforded one pure component, which equilibrated in solution within 2 h. 13C N.m.r. spectroscopy was used to confirm these
从一种罂粟属Lindl中分离出了相对较大量的Alpinigenine(1)。来自伊朗。用琼斯试剂氧化该生物碱产生内酯功能,并且出乎意料地将NMe转化为NCHO,以旋转异构体的混合物形式存在。结晶得到一种纯组分,其在溶液中在2小时内平衡。使用13 C Nmr光谱法确认了这些结果,并能够洞察到芹菜碱及其氧化产物中七元环溶液的构象。X射线分析清楚地确定了芹菜碱的绝对构型。