Melitric Acids A and B, New Trimeric Caffeic Acid Derivatives from Melissa officinalis.

Abstract

Two new polyphenolic compounds, melitric acids A (2) and B (5), were isolated from the aboveground part of Melissa officinalis (Labiatae) and their structures, consisting of three caffeic acid units, were determined from chemical rections and spectral data. Rosmarinic acid (1) was also isolated.