SYNTHETIC STUDIES ON QUINOCARCIN AND ITS RELATED-COMPOUNDS .2. SYNTHESIS OF AN ENANTIOMERIC PAIR OF THE ABC RING-SYSTEM OF QUINOCARCIN

被引:15
|
作者
SAITO, S [1 ]
TANAKA, K [1 ]
NAKATANI, K [1 ]
MATSUDA, F [1 ]
KATOH, T [1 ]
TERASHIMA, S [1 ]
机构
[1] SAGAMI CHEM RES CTR,SAGAMIHARA,KANAGAWA 229,JAPAN
关键词
ASYMMETRIC SYNTHESIS; QUINOCARCIN; ANTITUMOR ANTIBIOTIC; ABC RING SYSTEM; DIASTEREOSELECTIVE REDUCTION; INTRAMOLECULAR N; O-ACETAL FORMATION;
D O I
10.1016/S0040-4020(01)80642-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An enantiomeric pair of the ABC ring system (5 and ent-5) of quinocarcin (1), a patent antitumor antibiotic, was synthesized in >95% ee with an. aim to disclose novel aspects of the structure-activity relationships of 1. The key features of the synthesis consist of novel diastereoselective reduction of 1,3-disubstituted isoquinoline derivatives 29 and ent-29 to control stereochemistries at the C6 and C11a positions in 5 and ent-5 simultaneously in a single step and intramolecular N,O-acetal formation of amino aldehydes 6 and ent-6 to complete the requisite skeletal framework.
引用
收藏
页码:6209 / 6220
页数:12
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