Two new isoflavone glycosides from the vine stem of Millettia dielsiana.

Two new isoflavone glycosides, millesianins F (1) and G (2), along with 11 known ones (3-13) have been isolated from the n-butanol extract of the vine stems of Millettia dielsiana Harms. The structures of 1 and 2 were established as cladrastin 7-O-β-d-apiofuranosyl-(1 → 6)-β-d-glucopyranoside (1) and fujikinetin 7-O-β-d-apiofuranosyl-(1 → 6)-β-d-glucopyranoside (2) by means of spectroscopic analysis and chemical methods. Some isolates (compounds 1, 3, 4, 5, 6, and 11) were tested for their effects on the proliferation of hematopoietic progenitor cell, and the preliminary results showed that all of investigated compounds had moderate activities but not in dose-dependent manners.