5-Hydroxy-PGI.sub.1, 3,4-didehydropiperidylamides

6,6-Difluoro-5-hydroxy-4-(3-oxoalk-1-enyl)hexahydro cyclopenta[b

6,7-Didehydro-PGI.sub.1 compounds

6-Alkoxy-.omega.-aryl-PGI.sub.1 compounds

6-Methoxy-N-vanillylidene-4-chromanamine

7,8-Didehydro-2-decarboxy-2-hydroxymethyl-PGI.sub.1 compounds

7,8-Didehydro-PGI.sub.1 amides

7,8-Didehydro-PGI.sub.1 compounds

7-(or 6-) Substituted-7-(or 6-)acylimino cephalosporin (or penic

7-(Substituted)-7H-pyrrolo[3,2-f]quinazoline-1,3-diamines

7-D-(-)-mandelamido-3-(1-methyl-1H-tetrazol-5-yl)vinyl- 3-cephem

7-Styryl coumarin derivatives

7-Substituted camptothecin derivatives

7A-Homo-4-oxo-PGI.sub.1 compounds

9,11-Dideoxy-10-oxa-TXB intermediates

9,11-Dideoxy-10-oxa-TXB intermediates

9-Deoxy-5,9.alpha.-epoxy-4,5-cis-17,18-tetradehydro-PGF.sub.1, a

9-Deoxy-5,9.alpha.-epoxy-5,6-didehydro-PGF.sub.1 amides

9-Deoxy-6,9.alpha.-epoxymethano-PG C-1 alcohols

9-Deoxy-6,9.alpha.-epoxymethano-pg C-1 amides