(6aS,9R)-N-[(1S,2S,4R,7R)-2-hydroxy-5,8-dioxo-4,7-di(propan-2-yl)-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide 、
甲烷磺酸 、
乙醚 以
乙醇 为溶剂,
以98.2% of the theory) with a melting point of 178°-179° C. was obtained的产率得到麦角异柯宁碱甲烷磺酸盐