ABSTRACT
Objective: To study the chemical constituents from G. involucrata. Methods: The chemical constituents of G. involucrata were isolated by different column chromatographic techniques. The structures of these compounds were identified by a comprehensive analysis of the spectroscopic data. Results: Ten compounds were isolated from G. involucrata. The compounds were identified as N-benzoyl-2-hydroxy-2-(4'-hydroxy phenyl)-ethylamine (1), N-benzoyl-2-hydroxy-2-(3',4'-dihydroxy phenyl)-ethylamine (2), 6,9- dihydroxy-4,7-megastigmadien-3-one (3), 4-hydroxybenzyl cyanide (4), adenosine (5), hydroxy dihydrobovolide (5-hydroxyl- 3,4-dimethy-5-pentyl-2 (5H)-furanone (6), curculonone A (7), 3α-hydroxy-5,6-epoxy-7-megastigmen-9-one (8), gymnothelignan J (9), and gymnothelignan I (10). Conclusion: All the compounds are isolated from G. involucrata for the first time.