Brazoide E, a New Alkaloid and Other Compounds from Justicia wasshauseniana (Acanthaceae)
Renata D. Fernandes,
Raimundo Braz-Filho,
Mário G. de Carvalho
et al.
Abstract:A new alkaloid, named brazoide E (6), three known steroids (campesterol, β-sitosterol, stigmasterol), two glucosides (3-O-β-D-glucopyranosylsitosterol and 3-O-β-D-glucopyranosyl stigmasterol) and sucrose were isolated from the leaves and stems of Justicia wasshauseniana. Their structures were characterized using high-resolution electrospray ionization mass spectrometry (HRESIMS), nuclear magnetic resonance (1D and 2D NMR), and infrared (IR) spectroscopy. To reinforce the structural proposal, an acetylated deri… Show more
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