The structure of the strongly cytotoxic marine alkaloid halitulin (1) has been confirmed by total synthesis and its absolute configuration determined as (15S). The synthesis follows a strategy previously reported by one of us and uses an efficient preparation of the quinoline-7,8-diol unit by modified Baeyer-Villiger and Skraup reactions. The O-benzyl protecting groups were removed in the last step of the synthesis by transfer hydrogenolysis without concomitant reduction of the quinoline ring. The method can be applied for the synthesis of halitulin analogues. (C) 2003 Elsevier Ltd. All rights reserved.
机构:
CALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USACALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USA
Grubbs, RH
Chang, S
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机构:
CALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USACALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USA
机构:
CALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USACALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USA
Grubbs, RH
Chang, S
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USACALTECH, Div Chem & Chem Engn, Arnold & Mabel Beckman Lab Chem Synth, Pasadena, CA 91125 USA