1. Chemical constituents from Aphanamixis grandifolia
- Author
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Rong Zhang, Ying-Tong Di, Hongping He, Shun-Lin Li, Yu Zhang, Guo-Ying Zuo, and Xiao-Jiang Hao
- Subjects
Pharmacology ,Quantum chemical ,Bacteria ,Molecular Structure ,biology ,Plant Extracts ,Chemistry ,Stereochemistry ,Absolute configuration ,HL-60 Cells ,General Medicine ,biology.organism_classification ,Antimicrobial ,Terpenoid ,Aphanamixis ,Human tumor ,Chemical constituents ,Drug Discovery ,MCF-7 Cells ,Humans ,Moiety ,Diterpenes ,Meliaceae - Abstract
Four new terpenoids, nemoralisins D-G (1-4), were isolated from the leaves and stems of Aphanamixis grandifolia, along with two known diterpenoids, nemoralisin C and nemoralisin. Among them, compound 1 is the first example of norsesquiterpenoid with delta-lactone moiety, and nemoralisins E-G (2-4), are a class of acyclic diterpenoids, which are structurally related nemoralisin C and nemoralisin. These structures were established on the basis of spectroscopic methods and the absolute configuration of 1 was determined by comparison of quantum chemical TDDFT calculated and experimental ECD spectra. Nemoralisins D-G (1-4) were tested for their cytotoxicities on HL-60, SMMC-7721, A-549, MCF-7, and SW480 human tumor cell lines (IC50 > 40 mu M), as well as the antimicrobial activities on Staphylococcus aureus, Pseudomonas aeruginosa, MRSA92(#) and MRSA98(#) (MIC > 50 mu g/mL). (C) 2013 Elsevier B.V. All rights reserved.
- Published
- 2014