In the present work, we carried on a phytochemical analysis of three species of Burseraceas: Bursera aptera Ramírez, in which we isolated the compound 30, 31 and lignan-lactones 32-35. Bursera mirandae, in which we obtained ...

The chloroform extract of bark of the tropical tree Qualea parviflora (Vochysiaceae) was fractionated by column chromatography on silica gel, yielding triterpenes (lupeol, lupenone, betulin, epi-betulinic acid and friedelin) ...

Sterol and Triterpenes from Qualea species: Bioactivity on Mycobacterium tuberculosis The chloroform extract of bark of the tropical tree Qualea parviflora (Vochysiaceae) was fractionated by column chromatography on silica ...

The chloroform extract of bark of the tropical tree Qualea parviflora (Vochysiaceae) was fractionated by column chromatography on silica gel, yielding triterpenes (lupeol, lupenone, betulin, epi-betulinic acid and friedelin) ...

This work describes the chemotaxonomy study of Maytenus salicifolia and Maytenus gonoclada, and the phytochemical study of the fruit pulp and leaves of Maytenus salicifolia colected in UFMG Ecological Station in Belo ...

En el presente trabajo se realizó con el fin de aislar y caracterizar los constituyentes fitoquímicos del extracto diclorometano-metanol 1:1 de los tallos y de las hojas de la planta Sebastiania longicuspis, perteneciente ...

From the aerial parts of Zanthoxylum acuminatum (Rutaceae) collected in Upala, Alajuela, Costa Rica were isolated the known lignans hinokinin, (+)-asarinin, (+)- piperitol, (+)-kobusin, and epi-kobusin. In addition to the ...