Indolopyridoquinazoline alkaloid from Leptothyrsa sprucei
2001; Elsevier BV; Volume: 58; Issue: 4 Linguagem: Inglês
10.1016/s0031-9422(01)00248-5
ISSN1873-3700
AutoresXing-Cong Li, D. Chuck Dunbar, Hala N. ElSohly, Larry Walker, Alice M. Clark,
Tópico(s)Synthesis and bioactivity of alkaloids
ResumoThe indolopyridoquinazoline alkaloid, 3-hydoxyrutaecarpine, was isolated from Leptothyrsa sprucei, along with 8-methoxypsoralen, 5-methoxypsoralen, imperatorin, isoimperatorin, kaempferol 3-O-α-l-rhamnopyranoside, clematine and cnidioside B. The usefulness of the gradient 1H–15N HMBC NMR spectroscopy in the structure elucidation of 3-hydroxyrutaecarpine is noted.
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