O presente trabalho descreve a elucidação estrutural de uma nova β-lapachona tipo naftoquinona, isolada a partir das raízes de Distictella elongata. A nova substância, apresentando fórmula molecular C 16 H 16 O 6 , foi identificada como sendo 4,7-diidróxi-10-metóxi-2,2-dimetil3,4-diidro-2H-benzo[h]cromeno-5,6-diona, de acordo com os dados obtidos por meio de análises espectrométricas. A elucida...

There is already a literature report on the anti-ulcer effect of water extract of Ficus exasperata. Some communities in Edo and Delta States of Nigeria use the decoction of the leaf as hypotensive crude drug. Verification of this claim and also the microscopy and other pharmacognostic parameters which can be used to establish the identity of the leaf were carried out. The microscopy of the leaf...

Medusahead (Taeniatherum caput-medusae (L.) Nevski) is an exotic annual grass invading rangelands in the western United States. Medusahead is a serious management concern because it decreases biodiversity, reduces livestock forage production, and degrades the ecological function of rangelands. Despite the obvious importance of ranchers as partners in preventing and managing medusahead in rangel...