Three new abietane-type diterpenes from the bark of Cryptomeria japonica

Publication date: March 2017 Source:Phytochemistry Letters, Volume 19 Author(s): Chi-I Chang, Chien-Chih Chen, Sheng-Yang Wang, Hsun-Shuo Chang, Louis Kuoping Chao, Jih-Jung Chen, Cheng-Chi Chen, Yueh-Hsiung Kuo Three new abietane-type diterpenoids, 7α-butoxyabieta-8,12-diene-11,14-dione (1), 6α,7α-dihydroxyabieta-8,12-dien-11,14-dione (2), and 6α,7β-dihydroxyabieta- 8,12-diene-11,14-dione (3) were isolated from the bark of Cryptomeria japonica D. Don. Their structures were established by means of 1D and 2D NMR, IR, UV, and HR-EI-MS spectra and comparison with the data of known analogues. Graphical abstract

Source: Phytochemistry Letters - November 17, 2016 Category: Chemistry Source Type: research