Isoxazolinyl Spironucleosides: Stereoselectivity of 1,3-Dipolar Cycloadditions of 7-Methylenepyrrolo[1,2-c]pyrimidin-1(5H)-ones - Fischer, Róbert; Hýrošová, Eva; Drucková, Alexandra; Fišera, Lubor; Hametner, Christian; Cyrański, Michał K (Synlett, 2003)