TY - DATA T1 - Two Pyranocoumarins from the Seeds of Calophyllum polyanthum PY - 2004/09/24 AU - Chun-Hui Ma AU - Bin Chen AU - Hua-Yi Qi AU - Bo-Gang Li AU - Guo-Lin Zhang UR - https://acs.figshare.com/articles/journal_contribution/Two_Pyranocoumarins_from_the_Seeds_of_i_Calophyllum_polyanthum_i_/3323998 DO - 10.1021/np0499158.s002 L4 - https://ndownloader.figshare.com/files/5162782 KW - UV KW - calopolyanolide KW - HMQC KW - acid KW - HMBC KW - IR KW - NOESY KW - Calophyllum polyanthum KW - MS N2 - Two new pyranocoumarin diastereoisomers, calopolyanolides C (1) and D (2), were isolated from the ethanolic extract of the seeds of Calophyllum polyanthum, along with calopolyanolide A (3), calopolyanolide B (4), calanolide E2 (5), 5,7,3‘,4‘-tetrahydroxyisoflavone (6), 3,4-dihydroxybenzoic acid (7), 3,4,5-trihydroxybenzoic acid (8), 2-hydroxy-4-methoxybenzoic acid (9), β-sitosterol (10), β-daucosterol (11), 3,5-dihydroxy-4-methoxybenzoic acid (12), 3,5-dimethoxybenzoic acid (13), and ursolic acid (14). Their structures were determined by MS, UV, and IR data and HMQC, HMBC, and NOESY experiments or by comparing them with authentic samples. X-ray crystallographic analysis confirmed the structure and relative configuration of 1. ER -