References
- Kohli , V. , Blöcker , H. and Köster , H. 1980 . Tetrahedron Lett. , 21 : 2683 and references cited therein
- Habus , I. and Agrawal , S. 1994 . Nucleic Acids Research , 22 : 4350 and references cited therein
- Ravikumar , V. T. , Krotz , A. H. and Cole , D. L. 1995 . Tetrahedron Lett. , 36 : 6587