罗丹宁 、
4,4,6-trimethyl-1,2-dioxo-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-8-yl 2-methoxybenzoate 以
正丁醇 为溶剂,
以79%的产率得到[9,11,11-Trimethyl-2-oxo-3-(4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)-1-azatricyclo[6.3.1.04,12]dodeca-4,6,8(12),9-tetraen-6-yl] 2-methoxybenzoate