Synthesis 2022; 54(16): 3642-3650
DOI: 10.1055/a-1814-9637
paper

Synthesis and Structure–Activity Relationship Studies of Nicot­lactone Analogues as Anti-TMV Agents

a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
,
Yuan Chi
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
,
Cai-Yun Chen
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
,
Fei-Yu Wang
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
,
Jia-Xin Wang
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
,
Dan Xu
b   State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, P. R. of China
c   Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A & F University, 22 Xinong Road, Yangling 712100, Shaanxi, P. R. of China
,
Huan Zhou
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
b   State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, P. R. of China
,
Gong Xu
a   College of Plant Protection, Northwest A & F University, 3 Taicheng Road, Yangling 712100, Shaanxi, P. R. of China
b   State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, P. R. of China
› Institutsangaben
This study was financially supported by the Key Research and Development Program of Shaanxi (Program No. 2021NY-140), the Natural Science Basic Research Program of Shaanxi (Program No. 2022JQ-185), the Chinese Universities Scientific Fund (Nos. 2452018318, 2452019189, 2452019197), and the Program for Science & Technology Innovation Team of Shaanxi Province (2020TD-035).


Abstract

The synthesis of the originally proposed structure of (±)-nicotlactone A, a potent antiviral lignan with three continuous chiral centers, is reported in 5 steps from methyl acrylate. The key steps of the synthesis included an In-catalyzed regioselective allylation and a Mn-catalyzed Mukaiyama hydration reaction. Our synthetic strategy also enabled us to get the other three epimers and investigate the structure–activity relationship. The NMR data of the synthesized compounds do not match that of the isolated sample, indicating that the structure of nicotlactone A remains to be reassigned. All the synthetic target compounds were evaluated for their anti-tobacco mosaic virus (anti-TMV) activity. Bioassay results indicated that (±)-8-demethylnicotlactone A displayed similar anti-TMV activity to the commercial agent ningnanmycin, thus being a promising candidate or lead compound for developing novel antiviral agents in crop protection.

Supporting Information



Publikationsverlauf

Eingereicht: 05. März 2022

Angenommen nach Revision: 01. April 2022

Accepted Manuscript online:
01. April 2022

Artikel online veröffentlicht:
10. Mai 2022

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