Iridoid and phenylpropanoid glucosides from Tecoma capensis.

摘要

T. capensis [Tecomaria capensis subsp. capensis], a creeper common to the tropical zone, is grown in the Riviera Ligure, Italy, as an ornamental plant. Leaves of T. capensis contained tecomoside and large quantities of it's benzoic and cinnamic esters. A novel glucoside was also isolated. Its structure was determined as 7-O-(p-methoxy)benzoyl tecomoside from chemical and spectral analyses. Flowers of T. capensis contained tecomoside, 2 phenylethanoid-derived glucosides, cornoside and it's rearranged aglycone, halleridone, and rengioside B.