[1]Patent:US6353006,2002,B1,.Locationinpatent:Pagecolumn116
[1]Synthesis,2011,#22,p.3669-3674
[1]ArchivderPharmazie,1959,vol.292,p.165,167
[1]Patent:US6353006,2002,B1.Locationinpatent:Pagecolumn116
[1]Patent:US6353006,2002,B1.Locationinpatent:Pagecolumn116
[1]Patent:US4971966,1990,A
[1]Synthesis,2011,p.3669-3674