1-(4-(5-(cyclopropylmethyl)-6a,9-dimethyl-6-oxo-5,6,6a,7,9,10-hexahydro-[1,4]oxazino[3,4-h]pteridin-2-yl)phenyl)-3-methylurea 在
甲醇 作用下,
以
二氧化碳 为溶剂,
生成
1-(4-((6aR,9R)-5-(cyclopropylmethyl)-6a,9-dimethyl-6-oxo-5,6,6a,7,9,10-hexahydro-[1,4]oxazino[3,4-h]pteridin-2-yl)phenyl)-3-methylurea 、 1-(4-((6aS,9S)-5-(cyclopropylmethyl)-6a,9-dimethyl-6-oxo-5,6,6a,7,9,10-hexahydro-[1,4]oxazino[3,4-h]pteridin-2-yl)phenyl)-3-methylurea