Planta Medica Letters 2016; 3(01): e14-e16
DOI: 10.1055/s-0035-1568355
Letter
Georg Thieme Verlag KG Stuttgart · New York

Antiproliferative Butyrolactones from Mezilaurus crassiramea

Danilo Tófoli
1  Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
,
Laura Alves Verão Martins
2  Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
,
Maria de Fátima Cepa Matos
2  Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
,
Walmir Silva Garcez
1  Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
,
Fernanda Rodrigues Garcez
1  Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
› Author Affiliations
Further Information

Publication History

received 14 August 2015
revised 14 August 2015

accepted 15 January 2016

Publication Date:
11 February 2016 (online)

Abstract

Bioassay-guided fractionation of the ethanol extract from the leaves of Mezilaurus crassiramea, which was toxic to Artemia salina larvae, afforded 3′-acetylrubrenolide (1), 2′,3′-diacetylrubrenolide (2), and rubrenolide (3) from the active dichloromethane soluble fraction. Compound 1 is new, while 2 and 3 are first reported from a natural source and in the Mezilaurus genus, respectively. Compound 3 showed significant cytotoxicity against UACC-62, MCF-7, HT-29, and PC-3 human cancer cell lines, with GI50 values ranging from 3.3 to 9.9 µg/mL, while 1 and 2 exhibited marginal activities against at least five of the six investigated cell lines. The structures of 13 were established on the basis of 1D- and 2D-nuclear magnetic resonance analyses, high-resolution electrospray ionization mass spectrometry data and specific optical rotation values.

Supporting Information