Title
Two new ent-3,4-seco-labdane diterpenoids from Callicarpa nudiflora
Author
Lin Dong, Xiao-Po Zhang, Ming-Sheng Liu, Yan-Mei Li, Jin-Hui Wang, Yi Wang
Year
2012
Journal
Journal of Asian Natural Products Research
Abstract
Two new ent-3,4-seco-labdane diterpenoids, methylcallicarpate (1) and callicarpic acid (2), were isolated from the leaves of Callicarpa nudiflora Hook et Arn. Their structures and relative configurations were established by analysis of spectroscopic data. Their absolute configurations were assigned by the application of the CD technique for the first time among the ent-3,4-seco-labdane-type diterpenes.
Instrument
J-815
Keywords
Circular dichroism, Absolute configuration, Natural products