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Further chemical modification to identify more chemically stabilized EP4-re
ceptor selective agonists was continued. As a result, a further two EP4-rec
eptor selective agonists 5-thiaPGE(1) 2a, 10 and 9 beta -chloroPGF(2) analo
gue 11 were discovered. (C) 2001 Elsevier Science Ltd. All rights reserved.