title: Alkyl phloroglucinol derivatives from Syzygium levinei and their differentiation-inducing activity.
abstract: Eleven compounds have been identified from the whole plants of Syzygium levinei (Myrtaceae) on the basis of spectroscopic analysis and chemical methods. Among these compounds, (Z)-1-(2,6-dihydroxy-4-methoxyphenyl)-oct-5-en-1-one (1), (3 E,7 Z)-1-(2,6-dihydroxy-4-methoxyphenyl)-deca-3,7-dien-1-one (2), and 1-(2-O-beta-D-glucopyranosyl-5,6-dihydroxy-4-methoxyphenyl)-octan-1-one (3) were characterized as new alkyl phloroglucinol derivatives, and 1-(2,6-dihydroxy-4-methoxyphenyl)-hexan-1-one (4) was identified as a new natural product. Compounds 1, 2, and 4 were found to inhibit the proliferation of leukemia K562 and HL-60 cells and also to induce the differentiation of K562 cells as determined by the appearance of matured morphology and the increase in the intracellular hemoglobin level.
authors.affiliation: Department of Natural Products Chemistry, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, P. R. China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zou
authors.forename: Yi
authors.initials: Y
authors.lastname: Mi
authors.forename: Wenliang
authors.initials: W
authors.lastname: Chen
authors.forename: Qunfang
authors.initials: Q
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Liguang
authors.initials: L
authors.lastname: Lou
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhao
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D045744:Cell Line, Tumor / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D018922:HL-60 Cells / Q000187:drug effects; D006801:Humans; D020014:K562 Cells / Q000187:drug effects; D010696:Phloroglucinol / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D018514:Plant Structures; D027842:Syzygium
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D010696:Phloroglucinol