G. D. Alejandro

Publications110
h-index10
Citations405
Highly Influential Citations19
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Polyphyly of Mussaenda inferred from ITS and trnT-F data and its implication for generic limits in Mussaendeae (Rubiaceae).
Although recognition of Mussaenda as a separate genus has been widely accepted, its generic circumscriptions have always been controversial. In this first molecular phylogenetic study focused… Expand
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Antitubercular and Cytotoxic Chlorinated seco-Cyclohexenes from Uvaria alba.
Two new chlorine-containing polyoxygenated seco-cyclohexenes, albanols A (1) and B (2), along with the oxepinone metabolite grandiuvarone (3) were isolated from the endemic Philippine Annonaceae… Expand
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Bioclimatic niches of selected endemic Ixora species on the Philippines: predicting habitat suitability due to climate change
The pantropical genus Ixora is highly diverse, with several species endemic to the Philippines. Owing to their endemic nature, many of these species are endangered and little is known about their… Expand
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Inventory and Ethnobotanical Study of Medicinal Plants at Samar Island Natural Park, Philippines
Introduction: The Samar Island Natural Park (SINP) is a protected area because of high diversity of plant and animal species, some of which are endangered and endemic. To date, no plant assessment… Expand
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Tetrahydroxanthene-1,3(2H)-dione derivatives from Uvaria valderramensis.
Two tetrahydroxanthene-1,3(2H)-dione metabolites, valderramenols A (1) and B (2), were isolated from the Philippine endemic Annonaceous species Uvaria valderramensis. Planar structures of the… Expand
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Polyoxygenated seco-cyclohexenes and other constituents from Uvaria valderramensis
Abstract Phytochemical study on the Philippine endemic Annonaceae plant Uvaria valderramensis afforded a new highly oxygenated seco -cyclohexene derivative, valderepoxide ( 1 ), along with the six… Expand
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Chemotaxonomic implications of the absence of alkaloids in Psychotria gitingensis
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Ethnopharmacological studies on the uses of Euphorbia hirta in the treatment of dengue in selected indigenous communities in Pangasinan (Philippines)
Aim: Euphorbia hirta is the most widely used plant in the folkloric treatment of dengue in the Philippines. This study documents the anecdotal uses of E. hirta in the treatment of dengue in 3… Expand
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Molecular support of the classification of Greeniopsis Merr. in Aleisanthieae (Rubiaceae), with a revision of the genus
Greeniopsis Merr. is a small genus of Rubiaceae endemic to the Philippines. Previously, no molecular data have been available for Greeniopsis and its taxonomic position has remained controversial.… Expand
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A new species of Psydrax (Vanguerieae, Rubiaceae) from Luzon, Philippines including its conservation status
Psydrax puberula , a new species from the Philippines is here described and illustrated. It can easily be distinguished from the currently recognized Malesian Psydrax with its puberulent compound… Expand
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