Neisoposinine: A New Oxindole Alkaloid from Neisoperma oppositifolia [Apocynaceae]
1989; Elsevier BV; Volume: 28; Issue: 2 Linguagem: Inglês
10.3987/com-88-s119
ISSN1881-0942
AutoresA. A. Leslie Gunatilaka, H. Chandasiri Fernando, M. Munawer Qureshi, Sinnathamby Balasubramaniam,
Tópico(s)Chemical synthesis and alkaloids
ResumoA new oxindole alkaloid w e d neisosposinine was isolated from the stem k k of Neisosperma oppositifolia and its structure was elucidated as (1) with the aid of spectroscopic data.The C-18 methyl epimer of ( I ) , isacarapnauhine (2) was also isolated along with three indole a w o i d s , reserpiline (3), isoreserpiline (4) and ochroposinine (5 1.
Referência(s)