© 2017 The American Chemical Society and American Society of Pharmacognosy. A series of new triphenylphosphonium (TPP) derivatives of the triterpenoid betulin (1, 3-lup-20(29)-ene-3β,28-diol) have been synthesized and ...

MWNT-modified electrodes are introduced for the voltammetric determination of sulfur-containing amino acids. The morphology of the electrode surface has been characterized by atomic force microscopy. The MWNT layer consists ...

© 2015 Pleiades Publishing, Ltd. New C3- and C28-functionalized derivatives of the lupane triterpenoid betulin have been synthesized by esterification with ω-bromoalkanoic acids, and preliminary biological screening of the ...