目的 研究白苞裸蒴Gymnotheca involucrata全草的化学成分。方法 利用反相硅胶柱色谱和反相制备液相色谱等手段进行分离纯化，并通过¹H-NMR、¹³C-NMR等波谱技术进行结构鉴定。结果 从白苞裸蒴95%乙醇提取物中分离得到6个化合物，分别鉴定为裸蒴木脂素Y₃（1）、裸蒴木脂素Y₄（2）、gymnothelignan T（3）、gymnothelignan N（4）、gymnothelignan O（5）、gymnothelignan M（6）。结论 所有化合物均为首次从白苞裸蒴中分离得到，化合物1和2为新化合物。

Objective To study the chemical constituents from Gymnotheca involucrata. Methods The chemical constituents of G. involucrata were isolated by different column chromatographic techniques. The structures of these compounds were identified by comprehensive analysis of the spectroscopic data. Results Six compounds were isolated from G. involucrata. The compounds were identified as gymnothelignan Y₃ (1), gymnothelignan Y₄ (2), gymnothelignan T (3), gymnothelignan N (4), gymnothelignan O (5), and gymnothelignan M (6). Conclusion All the compounds are isolated from G. involucrata for the first time, and compounds 1 and 2 are two new compounds.

国家自然科学基金项目（21562027）；江西民族传统药现代科技与产业发展协同创新中心（JXXT201402017）