Syntheses of the structures postulated for 179 and 207E, members of a proposed new class of poison-frog alkaloids, 6,7-dehydro-5,8-disubstituted indolizidines, are described. The FT-IR spectrum and GC retention time of the synthetic 207E were different from those of the natural product; consequently the original structure of 207E needs to be revised. It is likely that the position of the double bond is instead at the 7,8-position.
本文介绍了 179 和 207E 假设结构的合成过程,这两种
生物碱是一种新的毒蛙
生物碱--6,7-脱氢-5,8-二取代的
吲哚利嗪类化合物。合成的 207E 的傅立叶变换红外光谱和气相色谱保留时间与
天然产物不同;因此需要对 207E 的原始结构进行修改。双键的位置很可能在 7,8 位。