The present invention provides a process for making a compound of general formula I:
wherein:
R=H or C
1-8
alkyl
X=C
3
-C
8
cycloalkyl, C
3
-C
8
aryl or C
3
-C
8
alkyl; Y=heteroaryl or aryl;
Z=H, HO
2
C—, C
1-8
alkyl O
2
C—, C
1-6
alkyl HNC(O)—,
and as described herein.
本发明提供了一种制备通式I化合物的过程:其中:R = H或C1-8烷基,X = C3-C8环烷基,C3-C8芳基或C3-C8烷基; Y = 杂环芳基或芳基; Z = H,HO2C—,C1-8烷基O2C—,C1-6烷基HNC(O)—,并如本文所述。