title: Two new abietane diterpenoids from the caulis and leaves of Callicarpa kochiana.
abstract: Previous studies revealed that diterpenoids from Callicarpa genus were mainly of clerodane-type and phyllocladane-type, and abietane-type diterpenoids were seldom reported. In this paper, we reported two new abietane diterpenoids, kochianic acid A (1) and kochianic acid B (2), together with two known abietane-type diterpenoids, pedunculatic acid B (3) and 7α, 15-dihydroxydehydroabietic acid (4), which were all isolated from Callicarpa kochiana. The structures of the new compounds 1 and 2 were elucidated on the basis of extensive spectroscopic analysis, including HSQC, HMBC, (1)H-(1)H COSY, ROESY and finally confirmed by single-crystal X-ray diffraction.
authors: School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China.
authors: Chao-Zhan
authors: CZ
authors: Lin
authors: Chen-Chen
authors: CC
authors: Zhu
authors: Zhong-Xiang
authors: ZX
authors: Zhao
authors: Xiao-Hui
authors: XH
authors: Li
authors: Tian-Qin
authors: TQ
authors: Xiong
authors: Yu-Ying
authors: YY
authors: Xia
authors: Yu
authors: Y
authors: Ning
mesh_terms: D045784:Abietanes / Q000737:chemistry*; D032408:Callicarpa / Q000737:chemistry*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D045784:Abietanes