%0 Journal Article
%A Ma, Chun-Hui
%A Chen, Bin
%A Qi, Hua-Yi
%A Li, Bo-Gang
%A Zhang, Guo-Lin
%D 2004
%T Two Pyranocoumarins from the Seeds of Calophyllum polyanthum
%U https://acs.figshare.com/articles/journal_contribution/Two_Pyranocoumarins_from_the_Seeds_of_i_Calophyllum_polyanthum_i_/3323998
%R 10.1021/np0499158.s002
%2 https://ndownloader.figshare.com/files/5162782
%K UV
%K calopolyanolide
%K HMQC
%K acid
%K HMBC
%K IR
%K NOESY
%K Calophyllum polyanthum
%K MS
%X 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.
%I ACS Publications