| 主权项 |
1. A process for preparing a compound of formula (I): said process comprising: hydrolyzing a compound of formula (II): wherein: X and Y are each independently OR6, SR6, or X and Y together with the carbon atom they are attached to form a ring of formula: wherein each R6 is independently C1-C6 alkyl, each X1 and X2 are independently O, or S; q is 1 or 2; each X3 is independently C1-C6 alkyl; t is 0, 1, 2, or 3, and each of R1, R2, R3, R4, and R5 is independently H or C1-C6 alkyl or R1 and R2 together with the carbon atom they are joined to form a C5-C6 cycloalkyl optionally substituted with 1-3 C1-C6 alkyl. |
