2.The pyrazoles ramification containing dithioether is synthesized by one-step method and characterized by H-NMR, IR and UV-Vis spectra.
并采用氢核磁共振,红外和紫外吸收手段进行了表征。
3.Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.
4.The structure of neostellerin, which was elucidated by NMR, especially 2D NMR analysis, was different from other daphnane type diterpenes isolated from this plant.