Unraveling Structures Containing Highly Conjugated Pyrrolo[4,3,2-de]quinoline Cores That Are Deficient in Diagnostic Proton NMR Signals.
J Nat Prod
; 83(1): 174-178, 2020 01 24.
Article
en En
| MEDLINE
| ID: mdl-31904956
ABSTRACT
This study began with the goal of identifying additional constituents from Zyzzya fuliginosa extracts obtained from an Indo-Pacific sponge (coll. no. 06132). The previous work identified several red and green pyrroloiminiquinones (aka pyrrolo[4,3,2-de]quinolines), and this reinvestigation provided two additional analogues, a blue compound named zyzzamine A (1) and a green compound named zyzzamine B (2). The relatively low ratio of H/[sum(CNO)] = 0.71 or 0.76 of this pair greatly complicated the final steps of compound characterization and required the use of five 2D NMR strategies and MS2 data sets.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Poríferos
/
Quinolinas
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
J Nat Prod
Año:
2020
Tipo del documento:
Article