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Antibacterial activity of crude extracts from Mexican medicinal plants and purified coumarins and xanthones.
Thirty-two extracts from 22 Mexican medicinal plants of 15 different families were assayed to determine their antibacterial activity against Escherichia coli and Staphylococcus aureus. SeventeenExpand
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In vitro cytotoxic activity of phenanthroindolizidine alkaloids from Cynanchum vincetoxicum and Tylophora tanakae against drug-sensitive and multidrug-resistant cancer cells.
Two known phenanthroindolizidine alkaloids, (-)-(R)-13aalpha-antofine (1) and (-)-(R)-13aalpha-6-O-desmethylantofine (2), and two new natural products, (-)-(R)-13aalpha-secoantofine (3) andExpand
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Antiproliferative constituents in plants 10. Flavones from the leaves of Lantana montevidensis Briq. and consideration of structure-activity relationship.
The flavonoid fraction from the leaves of Lantana montevidensis Briq. (Verbenaceae) showed antiproliferative activity against human gastric adenocarcinoma (MK-1, GI50: 12 microg/ml), human uterusExpand
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Protoplumericin, an iridoid bis-glucoside in Allamanda neriifolia.
Protoplumericin, 13-O-(β-D-glucopyranosyl-p-coumaroyl)-plumieride (IV), was isolated from the polar fraction of the MeOH percolate of Allamanda neriifolia HOOK by means of several columnExpand
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9α-hydroxypinoresinol, 9α-hydroxymedioresinol and related lignans from Allamanda neriifolia
Abstract 9α-Hydroxypinoresinol and 9α-hydroxymedioresinol were isolated along with seven known lignans, pinoresinol, medioresinol, syringaresinol, and their glucosides, from Allamanda neriifolia.
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Trypanocidal constituents in plants 1. Evaluation of some Mexican plants for their trypanocidal activity and active constituents in Guaco, roots of Aristolochia taliscana.
Crude extracts of Mexican medicinal plants were screened for trypanocidal activity against Trypanosoma cruzi, which is the etiological agent for Chagas' disease, one of the most serious protozoanExpand
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Trypanocidal constituents in plants 3. Leaves of Garcinia intermedia and heartwood of Calophyllum brasiliense.
The constituents of the leaves of Garcinia intermedia and heartwood of Calophyllum brasiliense were investigated based on their trypanocidal activity against epimastigotes of Trypanosoma cruzi, theExpand
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Antiproliferative constituents in plants 9. Aerial parts of Lippia dulcis and Lippia canescens.
The antiproliferative constituents in the MeOH extracts of the aerial parts of Lippia dulcis Trev. and Lippia canescens Kunth (Verbenaceae) were investigated. Activity-guided chemical investigationExpand
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HIV-1 inhibitory compounds from Calophyllum brasiliense leaves.
The hexane, acetone and methanol extracts of Calophyllum brasiliense leaves were fractionated following a three bioassay guide: high HIV-1 RT inhibition, low cytotoxicity on MT2 cells and highExpand
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Alkaloids from leaves and bark ofAlstonia scholaris in the Philippines
Abstract Lagunamine (19-hydroxytubotaiwine), angustilobine B acid and losbanine (6,7- seco -6- nor -angustilobine B) were obtained from the leaves of Philippine Alstonia scholaris , together withExpand
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