Abstract Phytochemical investigation of the roots of O. sennoides subsp. zanzibaricum Brenan & J.B. Gillett resulted in the isolation of three biflavonoids (trime-chamaejasmin, (+)- chamaejasmin, (+)-liquiritigeninyl-(I-3,II-3)-naringenin), one bi-4-phenyldihydrocoumarin (diphysin), one isoflavan (glabridin), one triterpenoid (3-O-acetyloleanoic acid) and a phytosterol (β-sitosterol). Compounds were identified by detailed MS, 1D and 2D NMR spectroscopic analyses. Their absolute configurations were elucidated based on ECD spectra. The previously undescribed trime-chamaejasmin represents a bis-epi-chamaejasmenin C diastereomer. The chemophenetic significance is discussed in detail. The results contribute to the phytochemical characterization of the genus Ormocarpum and suggest a close chemophenetic relationship with other genera within the subfamily Papilionoideae. Furthermore, this report provides baseline data for comparing the two infraspecific taxa of O. sennoides (Willd.) DC.

中文翻译：

---

Ormocarpum sennoides subsp. 根的化学成分。桑给巴尔草

摘要 O. sennoides subsp. 根的植物化学研究。zanzibaricum Brenan & JB Gillett 分离出三种双黄酮类化合物（trime-chamaejasmin、(+)- chamaejasmin、(+)-liquiritigeninyl-(I-3,II-3)-naringenin），一种 bi-4-phenyldihydrocoumarin )、一种异黄烷（光甘草定）、一种三萜（3-O-乙酰基齐墩果酸）和一种植物甾醇（β-谷甾醇）。通过详细的 MS、1D 和 2D NMR 光谱分析鉴定化合物。基于 ECD 光谱阐明了它们的绝对构型。先前未描述的三聚体-chamaejasmin 代表双表观-chamaejasmenin C 非对映异构体。详细讨论了化学表观的意义。结果有助于确定 Ormocarpum 属的植物化学特征，并表明与凤蝶亚科中其他属的化学表型关系密切。此外，该报告提供了用于比较 O. sennoides (Willd.) DC 的两个种下分类群的基线数据。