Chemical study on hapalosin, a cyclic depsipeptide possessing multidrug resistance reversing activities: Synthesis, structure and biological activity
作者:Toshiaki Okuno、Ken Ohmori、Shigeru Nishiyama、Shosuke Yamamura、Kensuke Nakamura、K.N. Houk、Kazuya Okamoto
DOI:10.1016/0040-4020(96)00951-9
日期:1996.11
Hapalosin 1 possessing a multidrug resistance reversing activity, has been synthesized from the corresponding hydroxy acids A, C and γ-amino acid B. The stereochemistry of the natural product 1 and N-demethylhapalosin 11 is discussed by means of spectroscopic manner as well as molecular modeling studies. Biological evaluation of 1 and 11 indicated that a cis-amide function is a crucial factor for the
由相应的羟基酸A,C和γ-氨基酸B合成了具有多重耐药逆转活性的Hapalosin 1。天然产物1和N-demethylhapalosin 11的立体化学通过光谱学方法以及分子建模研究进行了讨论。对1和11的生物学评估表明,顺式酰胺功能是MDR逆转活性的关键因素。