Spraggins, Robert Lee,2013-08-162013-08-161970http://hdl.handle.net/11244/2894ix, 101 leaves ;Prostaglandins.Chemistry, Organic.Steroids.I. TWO NEW PROSTAGLANDINS: 15-EPI-PGA(2) AND ITS ACETATE, METHYL DIESTER FROM THE GORGONIAN PLEXAURA HOMOMALLA (ESPER). II. TWO NOVEL MARINE STEROIDS: DELTA(5)-3,11, DIHYDROXY-9,11-SECO-GORGOSTEN-9-ONE (I) AND ITS (5ALPHA, 6ALPHA)-EPOXIDE (II) FROM THE GORGONIAN PSEUDOPTEROGORGIA AMERICANA (GMELIN).Two new prostaglandins, 15-epi-PGAb2s and its acetate, methyl diester from the gorgonian Plexaura homomalla (Esper)Two novel marine steroids, [Delta]p5s-3,11,dihydroxy-9,11-Seco-Gorgosten-9-on e (I) and its 5a, 6a-epoxide (II) from the gorgonian Pseudopterogorgia americana (Gmelin)Thesis