Unraveling Structures Containing Highly Conjugated Pyrrolo[4,3,2-de]quinoline Cores That Are Deficient in Diagnostic Proton NMR Signals.,Journal of Natural Products

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Unraveling Structures Containing Highly Conjugated Pyrrolo[4,3,2-de]quinoline Cores That Are Deficient in Diagnostic Proton NMR Signals.
Journal of Natural Products ( IF 3.3 ) Pub Date : 2020-01-06 , DOI: 10.1021/acs.jnatprod.9b01111
Erin P McCauley ₁ , Gavin C Smith ₁ , Phillip Crews ₁

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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.

中文翻译：

解开结构的含有高共轭吡咯并[4,3,2-de]喹啉核的诊断质子NMR信号不足。

这项研究的目的是从印度洋-太平洋海绵（coll。no。06132）中获得的Zyzzya fuliginosa提取物中鉴定出其他成分。先前的工作鉴定了几种红色和绿色的吡咯烷迷你醌（又名吡咯并[4,3,2-de]喹啉），这项重新研究提供了另外两种类似物，一种名为zyzzamine A的蓝色化合物（1）和一种名为zyzzamine B的绿色化合物（2 ）。这对相对较低的H / [sum（CNO）] = 0.71或0.76，极大地复杂了化合物表征的最终步骤，并需要使用5种2D NMR策略和MS2数据集。

更新日期：2020-01-07

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