Organic Chemistry Note
New Insecticidal Bufadienolide, Bryophyllin C, from Kalanchoe pinnata
2000 年 64 巻 6 号 p. 1310-1312
詳細
2000 年 64 巻 6 号 p. 1310-1312
Two insecticidal bufadienolides (1 and 2) were isolated from a methanol extract of the leaves of Kalanchoe pinnata by bioassay-guided fractionation. Compound 1 was identified as known bryophyllin A (bryotoxin C). The structure of new bufadienolide 2, named bryophyllin C, was determined by spectroscopic methods and the chemical transformation of 1. Compounds 1 and 2 showed strong insecticidal activity against third instar larvae of the silkworm (Bombyx mori), their LD50 values being evaluated as 3 and 5 μg/g of diet, respectively.
この記事は最新の被引用情報を取得できません。
