Processes for preparing dihydropyrimidine derivatives and intermediates thereof
First Claim
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1. A process for preparing adihydropyrimidine compound having Formula (I), or a tautomer thereof having Formula (Ia),
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Abstract
The present invention relates to processes for preparing a dihydropyrimidine derivative having Formula (I) or a tautomer thereof having Formula (Ia), as well as a intermediate thereof. The processes of the invention have simple operation, high optical purity of product, high yield and convenient work-up, which is suitable for industrial production.
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27 Claims
- 1. A process for preparing adihydropyrimidine compound having Formula (I), or a tautomer thereof having Formula (Ia),
- 17. A compound having Formula (V), or a tautomer thereof having Formula (V1), or a salt thereof, or a combination thereof,
- 20. A process for preparing a dihydropyrimidine compound having Formula (I), or a tautomer thereof having Formula (Ia),
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