Two New Clerodane Diterpenes from Dodonaea viscosa

摘要

Two new clerodane diterpenes 4 and 3, along with four known constituents, including neocleroda3,13-diene-15,16-olide-18-oic acid (1), stictic acid (2), hautriwaic acid (5), and 15,16-epoxy-19- hydroxy-1,3,13(16),14-clerodatetraen-18-oic acid (6), were isolated from stems and leaves of Dodonaea viscosa. Their structures were elucidated by spectroscopic methods, including one- and two-dimensional NMR experiments (COSY, HMBC. HMQC, and ROESY).