Compounds from the Chinese black ant (Polyrhachis dives) and NMR behavior of the isomers with formamide group.

Two new dopamine derivatives divesamides A (1) and B (2), along with six known N-containing compounds were isolated from the Chinese black ant (Polyrhachis dives). Their structures were determined on the basis of spectroscopic methods. Compound 1 is a racemate, and chiral HPLC separation yielded a pair of antipodes. The absolute configuration of (+)-1 was assigned by a computational method. The double signals in the (1)H and (13)C NMR spectra of 2 that resulted from the presence of a formamide group were discussed. The T- and B-lymphocytes proliferation assay showed that 2 has moderate immunosuppressive activity toward T- and B-lymphocytes proliferation at a concentration of 20 μM.

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Jian-Jun Tang, Qi Luo, Lei Di, Li Zhang, Qing Lu, Bo Hou, Zhi-Li Zuo, Hou-Lin Xia, Xiu-Jing Ma, Yong-Xian Cheng. Compounds from the Chinese black ant (Polyrhachis dives) and NMR behavior of the isomers with formamide group. Journal of Asian natural products research. 2015;17(1):20-6

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PMID: 25359634

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