Issue 11, 2024
From the journal:

RSC Advances

Four new isocoumarins from Cajanus cajan†

Liyuan Yao,abc   Aikebaier Jumai,ab   Xiaobao Huang,ae   Tingting Lin,a   Zhengguo Taod  and  Sheng-Xiang Qiu ORCID logo *ab  

* Corresponding authors

a State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Program for Natural Product Chemical Biology, Guangzhou 510650, China
E-mail: sxqiu@scbg.ac.cn
Fax: +86-20-37081190
Tel: +86-13924031914

b South China National Botanical Garden, Guangzhou 510650, P. R. China

c Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China

d Guangzhou Leader Biotechnology Co., LTD, Guangzhou, China

e Visiting Student from the Department of Chemistry, University of Wisconsin–Madison, USA

Abstract

Four novel new isocoumarins, cajanolactone B, C, D1 and D2 (1–4), were isolated from ethanolic extracts of the leaves of Cajanus cajan. The structural elucidation has been completed mainly depending on extensive spectroscopic analysis including UV, IR, NMR (1D and 2D), HRESIMS and chiral analysis. Notably, all these new isocoumarins were found to exist in racemic forms, among which compounds 3 and 4 share the same planar structure. This finding suggests that at least the biosynthesis of isocoumarin in C. cajan is chiral tolerant. A plausible biogenetic pathway of compounds 1–4 is proposed.

Graphical abstract: Four new isocoumarins from Cajanus cajan

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Article information

DOI
https://doi.org/10.1039/D3RA08149D
Article type
Paper
Submitted
28 Nov 2023
Accepted
31 Dec 2023
First published
05 Mar 2024
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2024,14, 7763-7769

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Four new isocoumarins from Cajanus cajan

L. Yao, A. Jumai, X. Huang, T. Lin, Z. Tao and S. Qiu, RSC Adv., 2024, 14, 7763 DOI: 10.1039/D3RA08149D

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