References
- LYLE et al., J. Med. Chem. (1991) 34: 1228–30
- THOMPSON et al., J. Med. Chem. (1992) 35: 168–81
- ROBERTS et al., Science (1990) 248: 358–61
- VACCA et al., Proc. Natl. Acad. Sci. USA (1994) 91: 4096–4100
- ASKIN et al., Tetrahedron Letters (1994) 34: 673–76.