Three new dolabrane diterpenes from the Chinese mangrove plant of Ceriops tagal

Publication date: September 2017 Source:Phytochemistry Letters, Volume 21 Author(s): Yuan Peng, Shu-Jun Ni, Jun Li, Min-Yi Li Three new dolabranes, tagalenes G − I (1 − 3), together with five known analogues (4 − 8), were isolated from the twigs of the Chinese mangrove, Ceriops tagal. Their structures were determined on the basis of extensive spectroscopic analysis and the comparison with the previous data. Tagalene G (1) is a 16-nordolabrane with a 15-hydroxymethyl scaffold, tagalene H (2) possesses an 18-hydroxymethyl moiety, whereas tagalene I (3) is a further addition to the small group of dolabranes with a rare 4, 18-epoxy ring. Compounds 6 − 7 were isolated from C. tagal for the first time. Graphical abstract

Source: Phytochemistry Letters - June 8, 2017 Category: Chemistry Source Type: research