esters to the vinblastin-23-oyl moiety through an amide linkage. Studies were extended to explore the influence of the nature of the amino acid, the ester alkyl chain lengths, the stereoisomerism of the amino acid, or the reacetylation of the hydroxyl group (position O-4) of the vindoline moiety. The present study deals with the synthesis of 21 vinblastin-23-oyl amino acid derivatives, some of their physicochemical
二聚
生物碱长春碱(VLB)和
长春新碱(
VCR)在结构上仅在二氢
吲哚氮上的官能团上不同。半合成衍
生物长春地辛(VDS)与VLB的区别在于其具有酰胺基而不是酯基。但是,这些微小的区别导致了这些化合物在溶瘤光谱,效价和毒性方面的巨大差异。Vinblastin-23-oyl
氨基酸衍
生物是通过酰胺键将
氨基酸羧酸酯与Vinblastin-23-oyl部分相连而合成的。扩展了研究以探讨
氨基酸的性质,酯烷基链长度,
氨基酸的立体异构性或长春藤碱部分的羟基(位置O-4)的重新乙酰化的影响。