Patent ID: 7820838

Claim:
An amine compound represented by formula 4, wherein, R 4 is H or an alkyl group of carbon number 4 or less, X 2 is selected from the group consisting of H or an alkyl group of carbon number 4 or less, an alkoxyalkyl group, an allyl group, or an alkyl or arylsulfonyl group, Y is oxygen or NH, and X 1 is a hydrogen, protecting group of amino group or a silyl groups consisting of an acyl group of carbon number 4 or less, t-butyldiphenylsilyl (TBDPS), triisopropylsilyl (TIPS), t-butyldimethylsilyl (TBS), triethylsilyl (TES), and trimethylsilyl (TMS), by Ugi reaction.