Synthesis of Tetrahydroisoquinoline Antitumor Natural Products: Construction of Tricyclic Lactams Through Pictet-Spengler-Type Cyclization of N-Methyl-3-arylmethylpiperazine-2,5-dione with Ethyl Diethoxyacetate
Synthesis of Tetrahydroisoquinoline Antitumor Natural Products: Construction of Tricyclic Lactams Through Pictet-Spengler-Type Cyclization of N-Methyl-3-arylmethylpiperazine-2,5-dione with Ethyl Diethoxyacetate