Patent ID: 6447998
Filing Date: 2002-09-10
Classification: C07D,C07H,C12Q

Abstract:
A compound of the formula: wherein:each R1 are independently H or a hydroxy protecting group, or both R1 groups are taken together to form a cyclic hydroxy protecting group; R2 is H, F, â€”OR1, or â€”OR6; R3 is H or â€”CH3; each R4 of formula I and II are independently H or an amine protecting group, or both R4 groups of formula I are taken together to form a cyclic amine protecting group; R5 is H, â€”CH3 or â€”Câ‰¡C â€”CH3; and R6 is and salts, solvates, resolved enantiomers and purified diastereomers thereof.