Total Synthesis of the Bicyclic Depsipeptide HDAC Inhibitors Spiruchostatins A and B, 5′′-<i>epi</i>-Spiruchostatin B, FK228 (FR901228) and Preliminary Evaluation of Their Biological Activity
作者:Koichi Narita、Takuya Kikuchi、Kazuhiro Watanabe、Toshiya Takizawa、Takamasa Oguchi、Kyosuke Kudo、Keisuke Matsuhara、Hideki Abe、Takao Yamori、Minoru Yoshida、Tadashi Katoh
DOI:10.1002/chem.200901552
日期:2009.10.26
Julia–Kocienski olefination of a 1,3‐propanediol‐derived sulfone and a L‐ or D‐malic acid‐derived aldehyde to access the most synthetically challenging unit, (3S or 3R,4E)‐3‐hydroxy‐7‐mercaptohept‐4‐enoic acid, present in a D‐alanine‐ or D‐valine‐containing segment; ii) a condensation of a D‐valine‐D‐cysteine‐ or D‐allo‐isoleucine‐D‐cysteine‐containing segment with a D‐alanine‐ or D‐valine‐containing
双环去肽肽组蛋白去乙酰化酶(HDAC)抑制剂spiruchostatins A和B,5'′- epi- spiruchostatin B和FK228可以通过聚合和统一的方式高效合成。合成方法涉及以下关键步骤:i)1,3-丙二醇衍生的砜和L-或D-苹果酸衍生的醛的Julia-Kocienski烯化反应,以合成最具挑战性的单元(3 S或3 R,4 E)-3-羟基-7-巯基庚基-4-烯酸,存在于含有D-丙氨酸或D-缬氨酸的链段中;ii)D-缬氨酸-D-半胱氨酸-或D的缩合-同种异体-isoleucine- d -半胱氨酸含与段d -alanine-或d含缬氨酸段直接组装相应的开环-acids; 和iii)的大环化开环使用椎名法或光延法构造必需15-或16-元大环内酯-酸。本合成已建立了螺旋藻抑素B的C5'立体化学。此外,对合成的二肽的HDAC抑制测定和细胞生长抑制分析确定了其效力的顺序,并揭示了