Vibsane‐Type Diterpenoids from Viburnum odoratissimum and Their Cytotoxic and HSP90 Inhibitory Activities. Issue 5 (11th May 2018)

• Record Type: Journal Article
• Authors: Zhu, Qin‐Feng; Qi, Yan‐Yan; Zhang, Zhi‐Jun; Fan, Min; Bi, Ran; Su, Jia; Wu, Xing‐De; Shao, Li‐Dong; Zhao, Qin‐Shi
• Is Part Of: Chemistry & biodiversity. Volume 15:Issue 5(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-05-11
• Subjects: vibsane‐type diterpenoids -- Viburnum odoratissimum -- cytotoxicity -- HSP90 inhibitor; Biochemistry -- Periodicals; Molecular biology -- Periodicals; Biodiversity -- Periodicals; 572
• DOI: 10.1002/cbdv.201800049
• Languages: English
• ISSNs: 1612-1872

Abstract

Abstract : Four new vibsane‐type diterpenoids, vibsanol I (1 ), 15‐hydroperoxyvibsanol A (2 ), 14‐hydroperoxyvibsanol B (3 ), 15‐ O ‐methylvibsanin U (4 ), and a new natural product, 5, 6‐dihydrovibsanin B (5 ), as well as six known analogues, were isolated from the twigs and leaves of Viburnum odoratissimum . Their structures were elucidated by spectroscopic analyses and chemical derivatization method. All compounds showed different levels of cytotoxicity against five cell lines (HL‐60, A‐549, SMMC‐7721, MCF‐7, and SW480). Remarkably, 14, 18‐ O ‐diacetyl‐15‐ O ‐methylvibsanin U (4a ) showed significant cytotoxicity against HL‐60, A‐549, SMMC‐7721, MCF‐7, and SW480, with IC 50 values of 0.15 ± 0.01, 0.69 ± 0.01, 0.41 ± 0.02, 0.75 ± 0.03, and 0.48 ± 0.03 μm, respectively. In addition, vibsanin K (10 ) was identified as a HSP90 inhibitor with an IC 50 value of 19.16 μm . Abstract :