(S)-7-Amino-6,7-dihydro-10-hydroxy-1,2,3-trimethoxybenzo[a]heptalen-9(5H)-on

BeschreibungA minor alkaloid of the colchicine class, this base was first isolated from the seeds and corms of Colchicum autumnale, Gloriosa virescens and Littoria modesta and subsequently by Russian workers from Merendera robusta Bge. Several specific rotations have been measured, e.g. [α]D - 184°, - 152° and - 180° (all in CHC13). The base is separated from the numerous accompanying alkaloids by chromatography and countercurrent distribution.