Enantioselective synthesis of (+)-polyzonimine, defensive monoterpene alkaloid produced by a milliped Polyzonium rosalbum, and determination of its S absolute configuration by Its conversion to (4S,5R,6S)-(+)-nitropolyzonamine

AUTOR(ES)

Takagi, Yasuyo, Mori, Kenji

FONTE

Journal of the Brazilian Chemical Society

DATA DE PUBLICAÇÃO

2000-12

RESUMO

A adição de Michael da enamina derivada do 2,2-dimetilciclopentanocarboxaldeído e do éter metílico do (S)-prolinol com o nitroetileno, forneceu o aduto correspondente em 75-76% ee, o qual foi convertido na (+)-polizonimina enantiomericamente pura, um espiro composto nitrogenado isolado das glândulas que contêm os compostos de defesa do "milliped" Polyzonium rosalbum. Através da conversão da (+)-polizonimina na (4S, 5R, 6S)-(+)-nitropolizonamina, foi possível estabelecer a configuração absoluta desta como sendo S.

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