Investigations of E. antiquorum, E. helioscopia, E. palustris, E. peplus and E. quadrialata for irritant and tumor promoting constituents afforded several new ingenane type diterpene esters derived from the parent alcohols ingenol and 20-deoxyingenol and from the hitherto unknown 20- deoxy-16-hydroxyingenol and 20-deoxy-13.16-dihydroxyingenol. The irritant activities of the natural compounds are reported together with some aspects on structure activity relationships
对 E. antiquorum、E. helioscopia、E. palustris、E. peplus 和 E. quadrialata 进行的刺激和肿瘤促进成分的研究发现了几种新的因格诺醇和 20-去氧因格诺醇的二萜酯衍生物,以及迄今为止未知的 20-去氧-16-羟基因格诺醇和 20-去氧-13,16-二羟基因格诺醇。报道了这些天然化合物的刺激活性,以及一些关于结构活性关系的方面。