Abstract: The present invention provides a preparation method for a natural product Trabectedin. Specifically, the present invention provides a preparation method for Et-743. In the method, tyrosine is used as an initial substrate, and after 26 steps of reaction, the Et-743 is synthesized. Raw materials and agents used in the synthetic route can all easily be obtained, reaction conditions are relatively mild, and preparation in large scale can be implemented.
Abstract: The present invention provides a preparation method for a natural product Trabectedin. Specifically, the present invention provides a preparation method for Et-743. In the method, tyrosine is used as an initial substrate, and after 26 steps of reaction, the Et-743 is synthesized. Raw materials and agents used in the synthetic route can all easily be obtained, reaction conditions are relatively mild, and preparation in large scale can be implemented.
Abstract: Provided are a heterocyclic carboxylic acid amide ligand and applications thereof in a copper catalyzed coupling reaction. Specifically, provided are uses of a compound represented by formula (I), definitions of radical groups being described in the specifications. The compound represented by formula (I) can be used as the ligand in the copper catalyzed coupling reaction of the aryl halogeno substitute, and is used or catalyzing the coupling reaction for forming the aryl halogeno substitute having C—N, C—O, C—S and other bonds.
Abstract: The present invention provides oxalic amide ligands and uses thereof in copper-catalyzed coupling reaction of aryl halides. Specifically, the present invention provides a use of a compound represented by formula I, wherein definitions of each group are described in the specification. The compound represented by formula I can be used as a ligand in copper-catalyzed coupling reaction of aryl halides for the formation of C—N, C—O and C—S bonds.
Abstract: Provided are a heterocyclic carboxylic acid amide ligand and applications thereof in a copper catalyzed coupling reaction. Specifically, provided are uses of a compound represented by formula (I), definitions of radical groups being described in the specifications. The compound represented by formula (I) can be used as the ligand in the copper catalyzed coupling reaction of the aryl halogeno substitute, and is used or catalyzing the coupling reaction for forming the aryl halogeno substitute having C—N, C—O, C—S and other bonds.