Abstract
A new thiophene acetylene, named 2,2-dimethyl-4-[5′-(prop-1-ynyl)-2,2′-bithiophen-5-yl]-1,3-dioxolane (1), was isolated from the roots of Echinops spinosus, and the structure was elucidated on the basis of oneand two-dimensional NMR (including 1H, 13C NMR, DEPT, 1H–1H COSY, HSQC, and HMBC).
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