期刊
MOLECULES
卷 19, 期 12, 页码 21215-21225出版社
MDPI AG
DOI: 10.3390/molecules191221215
关键词
lupane-type triterpenoids; Licania cruegeriana; platelet aggregation; SHR
资金
- IVIC [1067, 1227]
- Mision Ciencia [20071585]
- Fondo Nacional de Ciencia y Tecnologia (FONACIT) Venezuela
Three new lupane-type triterpenoids: 6 beta,30-dihydroxybetulinic acid glucopyranosyl ester (4), 6 beta,30-dihydroxybetulinic acid (5) and 6 beta-hydroxybetulinic acid (6), were isolated from Licania cruegeriana Urb. along with six known compounds. Their structures were elucidated on the basis of spectroscopic methods, including IR, ESIMS, 1D- and 2D-NMR experiments, as well as by comparison of their spectral data with those of related compounds. All compounds were evaluated in vivo for their effects on the mean arterial blood pressure (MABP) and heart rate (HR) of spontaneously hypertensive rats (SHR) and also in vitro for their capacity to inhibit the human platelet aggregation. None of the isolated flavonoids 1-3 showed cardiovascular effects on SHR and among the isolated triterpenoids 4-9 only 5 and 6 produced a significant reduction in MABP (60.1% and 17.2%, respectively) and an elevation in HR (11.0% and 41.2%, respectively). Compounds 3, 4, 5 and 6 were able to inhibit human platelet aggregation induced by ADP, collagen and arachidonic acid with different selectivity profiles.
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