Sorocein I, a new Diels-Alder type adduct from Sorocea ilicifolia.
From ethyl acetate extract of the root bark of Sorocea ilicifolia a new ketalized Diels-Alder type adduct, sorocein I (1), was isolated.
Diels–Alder type adducts with potent alpha-glucosidase inhibitory activity from Morus macroura
Abstract Two new Diels–Alder type adducts, macrourins I and J (1–2), along with seven known analogues (3–9) were isolated from the stems of Morus macroura Miq. The structures of the two new compounds were elucidated by extensive analysis of spectroscopic data. Compounds 1–9 all showed highly potent in vitro α-glucosidase inhibitory activities, and the IC50 values of compounds 1 and 2 were 1.70 and 1.58 μM, respectively, approximately 800 times stronger than the positive control, acarbose.
Three new flavanone derivatives from the root bark of Sorocea bonplandii baillon
Three new flavanone derivatives named sorocein C (2), sorocein D (1) and sorocein H (3) together with the known artonin D, kuwanon C, cyclo- morusin, and kuwanon J were isolated from the methanolic extract of the roots of Sorocea bonplandii. The structures were assigned on the basis of spectroscopic evidences