New long-chained feruloyl ester from the bark of <Emphasis Type="Italic">Cedrelinga catenaeformis</Emphasis>

Tetradecyl ferulate and a new n-alkyl ester of 3-hydroxy-4-methoxy-trans-cinnamate (hexacosanylisoferulate) have been isolated from Cedrelinga catenaeformis Duke (Leguminoseae). The structures were determined by 1D- and 2D-NMR spectroscopy, mass spectrometry, chemical transformations and finally from unambiguous synthesis. This is the first report of long chained cinnamic acid ester derivative from the genus. Published in Khimiya Prirodnykh Soedinenii, No. 3, pp. 214–216, May–June, 2007. Dedicated to Profs. S. El-Kousy, E. E. A. El-Khrisy, and K. B. G. Torssell on the occasion of their 60^th, 65^th, and 75^th birthdays.     

黄花木化学成分研究

从黄花木中分离得到5种化合物,经化学和光谱方法鉴定它们为:野决明碱、安那吉碱、金雀花碱、β-谷甾醇及1新化合物5-α-羟基-7,17-脱氢异羽扇豆碱。研究结果表明,黄花木属、野决明属和沙冬青属植物在植物化学分类学上具有亲缘关系。     

Studies on Chemical Constituents of Thermopsis Licentiana(I)——The Structure of A New Alkaloid

The Thermopsis genus(Leguminoseae) is comprised of many species, some of which can be used as folk medicine for the treatment of rabies in China. Thermnopsis licentiana is one of the species and has not been studied yet. The present paper reports the separation and identification of a new quinolizidine alkaloid(crystal A_4 see Fig. 1).