Plant constituents biologically active to insects. IV. Antifeedants for the larvae of the yellow butterfly, Eurema hecabe mandarina, in Arachniodes standishii.
作者:ATSUSHI NUMATA、TAKAKO KATSUNO、KYOKO YAMAMOTO、TOMOKO NISHIDA、TSURUKO TAKEMURA、KO SETO
DOI:10.1248/cpb.32.325
日期:——
Nine species of plants having antifeeding activities for the larvae of the yellow butterfly, Eurema hecabe mandarina DE L'ORZA, were found. From one of them, Arachniodes standishii (MOORE) OHWI, the known compound, 1-(2, 4, 6-trimethoxyphenyl) but-trans-2-en-1-one (I), was isolated as an antifeedant. This compound was synthesized according to the Friedel-Crafts procedure, which also gave two new compounds, 1, 3-bis (2, 4, 6-trimethoxyphenyl) butan-1-one (VI) and 1-(2, 4, 6-trimethoxyphenyl)-3-[3-(2-trans-butenoyl)-2, 4, 6-trimethoxyphenyl] butan-1-one (VII), as by-products. Treatment of 1, 3, 5-trimethoxybenzene (V) with ferric chloride was found to afford 2, 2', 4, 4', 6, 6'-hexamethoxybiphenyl (VIII), which has been synthesized according to Ullmann's procedure.
发现了九种对黄蝶 Eurema hecabe mandarina DE L'ORZA 幼虫具有抗食性的植物。从其中一种植物 Arachniodes standishii (MOORE) OHWI 中分离出了已知化合物 1-(2, 4, 6-三甲氧基苯基)丁-反式-2-烯-1-酮 (I),作为一种反食性物质。这种化合物是根据 Friedel-Crafts 程序合成的,同时还得到了两种新化合物,即 1,3-双 (2,4,6-三甲氧基苯基) 丁-1-酮 (VI) 和 1-(2,4,6-三甲氧基苯基)-3-[3-(2-反式丁烯酰基)-2,4,6-三甲氧基苯基] 丁-1-酮 (VII),作为副产品。用三氯化铁处理 1,3,5-三甲氧基苯 (V) 后,发现可以得到 2,2',4,4',6,6'-六甲氧基联苯 (VIII)。