Patent ID: 8173610

Claim:
A compound having Formula 1: wherein R 1 , R 2 , and R 3 are the same or different and represent a hydrogen atom; a linear or branched alkyl group comprising from 1 to 5 carbon atoms; a linear or branched alkenyl or alkynyl group with an alkyl chain containing 1 to 5 carbon atoms; an alkyl carbonyl group containing 1 to 5 carbon atoms; or a formamidinyl or dialkylformamidinyl group with an alkyl chain containing 1 to 5 carbon atoms, and R 4 represents a linear or branched alkyl group comprising from 1 to 5 carbon atoms; a linear or branched alkenyl or alkynyl group with an alkyl chain containing 1 to 5 carbon atoms; an alkyl carbonyl group containing 1 to 5 carbon atoms; or a formamidinyl or dialkylformamidinyl group with an alkyl chain containing 1 to 5 carbon atoms , or a pharmaceutically acceptable salt thereof.