| abstract |
The invention provides a compound useful as a synthetic intermediate for an anti-HIV agent having an integrase inhibiting activity, and a method for producing it, as well as a method for producing an anti-HIV agent using this synthetic intermediate. In particular, for example, a compound of the formula (2 ') is provided wherein R represents a fluorine atom or a methoxy group and R represents a hydrogen atom or a CC-alkyl group or its salt and a method for producing it, and a method for producing an anti-HIV agent using this synthetic intermediate. |