title: Callviminols A-E, new terpenoid-conjugated phloroglucinols from the leaves of Callistemon viminalis.
abstract: Callviminols A-E (1-5), five rare phloroglucinols bearing a framework embodying a hexahydrodibenzo[b,d]furan or 2-phenylcyclohexanol nucleus derived from a phloroglucinol-monoterpene adduct, were isolated from the leaves of Callistemon viminalis. Their structures were established via extensive spectroscopic measurements, with the absolute configuration of 5 determined by electronic circular dichroism (ECD) calculations. The plausible biogenetic pathway suggested that a unique oxidative radical addition and classic cationic cyclization were key biosynthetic steps.
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
authors: Hong-Xin
authors: HX
authors: Liu
authors: School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
authors: Kai
authors: K
authors: Chen
authors: State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
authors: Yuan
authors: Y
authors: Liu
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors: Can
authors: C
authors: Li
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors: Jie-Wei
authors: JW
authors: Wu
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors: Zhi-Fang
authors: ZF
authors: Xu
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. Electronic address: tanhaibo@scbg.ac.cn.
authors: Hai-Bo
authors: HB
authors: Tan
authors: Program for Natural Product Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. Electronic address: sxqiu@scbg.ac.cn.
authors: Sheng-Xiang
authors: SX
authors: Qiu
mesh_terms: D045744:Cell Line, Tumor; D006801:Humans; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D027822:Myrtaceae / Q000737:chemistry*; D010696:Phloroglucinol / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D013729:Terpenes; D010696:Phloroglucinol
keywords: Callistemon viminalis; Callviminols A-E; Phloroglucinols