Chemical constituents of Micromelum minutum. Isolation and structural elucidation of new coumarins

Abstract

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 micromarin-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.