A convergent total synthesis of (±)-colchicine and (±)-desacetamidoisocolchicine
摘要:
Total syntheses of (±)-desacetamidoisocolchicine (2b) and (±)-colchicine (1a) have been achieved. Key features of the synthetic sequence are the facile incorporation of a tropolone dication equivalent via ketone 6 and introduction of the 7-acetamido group. Some of the mechanistic details of the conversion of alcohol 7 to dihydrotropolone 8 and alcohols 14a,b to ester 19 are discussed.
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DOI:
10.1021/ja00409a032
被引量:
年份:
1981




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