Patent ID: 8173648

Claim:
A type of novel 1,2,3,4-tetrahydroisoquinoline compound with a structure of formula (I): wherein: R1 represents a structure of formula (II): where m is 1-4; or R1 represents a structure of formula (III): where n is 1-4; and wherein: R2 represents a structure of formula (IV): wherein R3 is selected from methyl (—CH 3 ), ethyl (CH 2 CH 3 ) or propyl (—(CH 2 ) 2 CH 3 ); wherein R4 is selected from methyl (—CH 3 ), ethyl (CH 2 CH 3 ) or propyl (—(CH 2 ) 2 CH 3 ); or R2 represents a structure of formula (V): wherein X is selected from —CH 2 —, oxygen or sulfur; or R2 represents a structure of formula (VI): wherein Y is selected from —CH 2 —, oxygen or sulfur.