The invention provides a method for converting sesquiterpene. The method includes reacting a sesquiterpene substract with a sesquiterpene converting enzyme. The enzyme is from a species or organism containing sesquiterpenes. The sesquiterpene substrate is not naturally present in the species or organism.
Four new sesquiterpene lactones, cichoriolide A and cichoriosides A, B and C, have been isolated from Cichorium endivia L. and C. intybus L., together with nine known sesquiterpene lactones. The structures of the new compounds were established on the basis of chemical and spectral data. Further, the cytotoxic activities of related glycosides and the aglycones were compared in the L-5178Y cultured cell system.
the first biocatalytic modification of sesquiterpenelactones (STL) found in chicory plants. Regioselective O-acylation of their primary alcohol group is achieved by the immobilized lipase B from Candida antarctica, with various aliphatic vinyl esters as acyl donors. High conversion rates were observed, facilitating the synthesis of novel semi-synthetic STL ester derivatives with promising pharmaceutical
本文报道了在菊苣植物中发现的倍半萜内酯 (STL) 的首次生物催化修饰。其伯醇基团的区域选择性O-酰化是通过来自南极假丝酵母的固定化脂肪酶 B 以各种脂肪族乙烯基酯作为酰基供体实现的。观察到高转化率,促进了具有良好药物应用前景的新型半合成STL酯衍生物的合成。
GROMEK, DANUTA, POL. J. CHEM., 63,(1989) N-3, C. 297-301
作者:GROMEK, DANUTA
DOI:——
日期:——
SETO, MAMORU;MIYASE, TOSHIO;UMEHARA, KAORU;UENO, AKIRA;HIRANO, YUTAKA;OTA+, CHEM. AND PHARM. BULL., 36,(1988) N 7, C. 2423-2429