Synthesis and anti-juvenile hormone activity of 2,2-dimethl-1,2-dihydroquinoline derivatives. Nitrogen analogues of precocene I and II.
作者:Kazunori TSUSHIMA、Makoto HATAKOSHI、Noritada MATSUO、Nobuo OHNO、Isamu NAKAYAMA
DOI:10.1271/bbb1961.49.2421
日期:——
A synthesis of nitrogen analogues of the natural insect anti-juvenile hormones precocene I and II is reported. The crucial step of this synthesis is thermal cyclization of the N-alkynylaniline 3 into the corresponding 1, 2-dihydroquinoline when promoted by a copper catalyst. Biological testing of the anti-juvenile hormone activity was carried out against Callosobruchus chinensis by observing the inhibition of eclosion. The 7-methoxy analogue showed higher activity than the 6, 7-dimethoxy analogue. However, the former showed lower activity than precocene I.
报告了天然昆虫抗幼龄激素 precocene I 和 II 的氮类似物的合成。该合成的关键步骤是在铜催化剂的催化下,将 N-炔基苯胺 3 热环合为相应的 1,2-二氢喹啉。通过观察对 Callosobruchus chinensis 羽化抑制作用,对抗幼龄激素活性进行了生物学测试。7-甲氧基类似物比 6,7-二甲氧基类似物活性更高。然而,前者的活性比 precocene I 低。