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C21二元羧酸是一种发展很快,性能优良的多官能物质,本文阐述了采有篦麻同的为原料,经催化脱水,高压水解制得亚油酸,再经Diels-Alder加成反应制取C21二元羧......
Two new C21 steroids were isolated from the CHCl3 extract of the stem of Marsdenia tenacissima. On the basis of spectros......