The present invention provides a process of a compound of the formula (I):
1
wherein R is heteroaryl or the like, ring A is a heteroalicyclic group or the like comprising reacting a compound of the formula (II):
2
wherein Hal is halogen and the other symbols are the same as the above, in the presence of a sulfinic acid salt and further in the presence of an acid or a salt with an organic base, and a novel crystal form of 2-(3-isoxazolyl)-3,6,7,9-tetrahydroimidazo[4,5-d]pyrano[4,3-b]pyridine phosphate monohydrate.
本发明提供了一种式(I)化合物的工艺:
1
其中 R 是杂芳基或类似基团,环 A 是杂脂环基团或类似基团,包括使式(II)化合物反应:
2
其中 Hal 为卤素,其他符号与上述相同,在
亚硫酸盐存在下,并进一步在酸或盐与有机碱存在下,生成 2-(3-
异恶唑基)-3,6,7,9-四氢
咪唑[4,5-d]
吡喃[4,3-b]
吡啶磷酸盐一
水合物的新型晶型。