Isolation and characterization of a presumed biosynthetic precursor of camptothecin from extracts of Camptotheca acuminata
作者:Brad K. Carte、Charles DeBrosse、Drake Eggleston、Mark Hemling、Mary Mentzer、Benjamin Poehland、Nelson Troupe、John W. Westley、Sidney M. Hecht
DOI:10.1016/s0040-4020(01)88369-1
日期:1990.1
A biosynthetic precursor 4 of the antitumor alkaloid camptothecin (1) has been isolated from alkaloid enriched extracts of Camptotheca acuminata. The structure of 4, which was determined both in the solid state by x-ray diffraction and in solution by NMR analysis, provides strong evidence in support of the proposed biosynthetic scheme for camptothecin (1).
生物合成的前体4的抗肿瘤生物碱喜树碱(的1)已经从生物碱富集提取物中分离喜树。4的结构,既通过固态X射线衍射测定,又通过NMR分析在溶液中测定,都为喜树碱(1)的拟议生物合成方案提供了有力证据。