Three new triterpenoids with their bioactives from the roots of Rosa cymosa

Three new triterpenoids, 2α, 3α, 20β, 23-tetrahydroxyurs-13 (18)-en-28-oic-acid (1) (Figure 1), 2β, 3α, 20β, 23-tetrahydroxyurs-13(18)-en-28-oic-acid (2), and 2α, 3α-dihydroxyurs-12(13), 18(19)-dien-28-oic-acid (3) were isolated from the roots of R. cymosa. Their structures were elucidated by extensive spectroscopic methods, including NMR, MS, and IR spectroscopic analyses data. All the isolates were evaluated for their α-glucosidase inhibitory...