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Ribeiro PRV, Araújo AJ, Costa-Lotufo LV, Braz-Filho R, Nobre Junior HV, da Silva CR, de Andrade Neto JB, Silveira ER, Lima MAS. Spirostanol glucosides from the leaves of Cestrum laevigatum L. Steroids 2016; 106:35-40. [PMID: 26705702 DOI: 10.1016/j.steroids.2015.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/21/2015] [Accepted: 12/10/2015] [Indexed: 11/23/2022]
Abstract
Two new steroidal saponins, (25R)-spirost-5-ene-3β,26β-diol 3-O-α-L-rhamnopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 4)-[(1 → 2)-α-L-rhamnopyranosyl]-β-D-glucopyranoside (1) and (25R)-spirost-6-ene-3β,5β-diol 3-O-α-L-rhamnopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 4)-[(1 → 2)-α-L-rhamnopyranosyl]-β-D-glucopyranoside (2), along with the known diosgenin 3-O-α-L-rhamnopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucopyranoside (3), chonglouoside SL-5 (4) and Paris saponin Pb (5) were isolated from the leaves of Cestrum laevigatum. The structures of the compounds were determined using spectroscopic analyses including HRESI-MS, 1D and 2D NMR data, followed by comparison with data from the literature. Among them, two are particularly unique, compound 1 is the first (6)Δ-spirostanol saponin and compound 2 has an unusual C-26 hydroxyl in the (5)Δ-spirostanol skeleton. Antifungal testing showed a potent activity to formosanin C against Candida albicans and Candida parapsilosis. Evaluation of the cytotoxic activity indicated that compound 1 has a moderate activity against HL-60 and SF-295 cell lines, while compound 2 were active only against HL-60.
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Affiliation(s)
- Paulo Riceli Vasconcelos Ribeiro
- Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, CP 12.200, CEP 60.021-940 Fortaleza, CE, Brazil
| | - Ana Jérsia Araújo
- Departamento de Farmacologia e Fisiologia, Faculdade de Medicina, Universidade Federal do Ceará, CP 12.200, 60430-270 Fortaleza-CE, Brazil
| | - Letícia Veras Costa-Lotufo
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, CEP 05508-900 São Paulo, SP, Brazil
| | - Raimundo Braz-Filho
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, 28013 602 Campos dos Goytacazes, RJ, Brazil; Departamento de Química, Universidade Federal Rural do Rio de Janeiro, CP 74541, 23890-000 Seropédica, RJ, Brazil
| | | | - Cecília Rocha da Silva
- Departamento de Farmácia, Universidade Federal do Ceará, CP 12.200, 60430-170 Fortaleza, CE, Brazil
| | | | - Edilberto Rocha Silveira
- Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, CP 12.200, CEP 60.021-940 Fortaleza, CE, Brazil
| | - Mary Anne Sousa Lima
- Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, CP 12.200, CEP 60.021-940 Fortaleza, CE, Brazil.
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