4,5-Cis-didehydro-PGE.sub.1 compounds

4,5-Cis-didehydro-PGF.sub.1 analogs

4,5-Cis-didehydro-PGF.sub.1 compounds

4,5-Cis-didehydro-PGF.sub.1.sub..alpha. analogs

4,5-Dialkoxy-6 or 7-indanaldehydes

4,5-Didehydro-6-hydrox y-2-arylmethoxymethyl-4.alpha.-tetrahydro

4,5-Didehydro-6-hydroxy-2.beta.-aryl methoxymethyl-3.alpha.-tetr

4,5-Didehydro-6-hydroxy-2.beta.-arylm ethoxymethyl-4.alpha.-tetr

4,5-Didehydro-6-methoxy-2-arylmethoxymethyl-4.alpha.-tetrahydrop

4,5-Didehydro-6-oxo-2-aryl-methoxymethyl-3.alpha.-tetrahydropyra

4,5-Dihalopyrrole-2-carboxamides

4,5-Dihydro-3,3-diphenyl-4-hydrocarbylaminomethylfuran-2(3H) one

4,5-Dihydrotetrazolo(1,5-A)quinoxalines

4,5-Seco-estrane-3,5,17-trione derivatives

4,5-Seco-steroids

4,5-Secoandrostanes

4,5-Secopregnane derivatives

4,6,8(14)-Triene steroids

4,6-Dibromo-5-hydroxy-2-pyridine nitrile compounds and method of

4,7-Dihydroindanyl alkanols, analogues thereof and their corresp