1. Present address: Hybridon, Inc., 155 Fortune Blvd., Milford, MA 01757.
2. Reviews: (a) Barany, G.; Merrifield, R. B. InThe Peptides;Gross, E., Meienhofer, J., Eds.; Academic Press: New York, NY, 1979; Vol. 2, pp 1-284. (b) Atherton, E.; Sheppard, R. C.Solid Phase Peptide Synthesis: A PracticalApproach;IRL Press: Oxford, 1989. (c) Fields, G. B.; Tian, Z.; Barany, G. InSynthetic Peptides. A User's Guide; Grant, G. A., Ed.; W. H. Freeman and Co. New York, 1992; pp 77−183. (d) Merrifield, B. InPeptides: Synthesis,Structures, and Applications;Gutte, B., Ed.; Academic Press, Inc. San Diego, CA, 1995; pp 93−169.