A Pair of Novel Sulfonyl-Containing N-Acetyldopamine Dimeric Enantiomers From Aspongopus chinensis
Keyword(s):
A pair of novel sulfonyl-containing N-acetyldopamine dimer enanitomers, (±)-aspongamide E (1), a new ester 2-aminoethyl ( E)-hex-2-enoate (2), along with 3 known compounds (3-5) were isolated from Aspongopus chinensis. Their structures were determined by spectroscopic methods. Compound 1 is a racemic mixture, chiral high-performance liquid chromatography separation followed by electronic circular dichroism calculations assigned the absolute configurations of 2 enantiomers of 1. Compounds 3-5 were isolated from A. chinensis for the first time. The biological activity of the selected new compounds against renal fibrosis was evaluated.
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