2000 Volume 48 Issue 3 Pages 334-338
The chemical constituents of an acetone extract of the stems of Micromelum minutum WIGHT et ARN (Rutaceae), collected at Nakorn-Rachasima province in Thailand, were studied. Six new coumarins, named micro-marin-A (1), -B (2), -C (3), -F (4), -G (5), and -H (6), were isolated along with six known coumarins, and their structures were elucidated by chemical and spectroscopic methods.