Echinophyllins A and B, novel nitrogen-containing clerodane diterpenoids from Echinodorus macrophyllus
2000; Elsevier BV; Volume: 41; Issue: 16 Linguagem: Inglês
10.1016/s0040-4039(00)00314-2
ISSN1873-3581
AutoresJun’ichi Kobayashi, Mitsuhiro Sekiguchi, Hideyuki Shigemori, Ayumi Ohsaki,
Tópico(s)Synthetic Organic Chemistry Methods
ResumoTwo novel nitrogen-containing clerodane diterpenoids, echinophyllins A (1) and B (2), were isolated from the leaves of the Brazilian medicinal plant Echinodorus macrophyllus ('Chapéu-de-couro'), and their structures and relative stereochemistry were elucidated by spectroscopic data. Echinophyllins A (1) and B (2) possess a unique α,β-unsaturated γ-lactam ring consisting of a clerodane diterpene and a tyramine unit or N-feruloyl putrescine unit, respectively.
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