(R)-tert-butyl 1-(4-(8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)ethylcarbamate 、
N-氯代丁二酰亚胺 以to afford the desired product (27 mg, 11%) as a yellow solid的产率得到(R)-tert-butyl 1-(4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)ethylcarbamate