William J. Karpel

Sterols. XI. 17α-Hydroxy-11-desoxycorticosterone (Reichstein's Substance S)

Percy L. Julian, Edwin W. Meyer, William J. Karpel et al. · Journal of the American Chemical Society · 1950 · 60 citations

Bioorganic Chemistry, Engineering, Chemical Analysis +16

Studies in the Indole Series. X. Yohimbine (Part 2). The Synthesis of Yobyrine, Yobyrone and “Tetrahydroyobyrine”

Percy L. Julian, William J. Karpel, Arthur Magnani et al. · Journal of the American Chemical Society · 1948 · 51 citations

Bioorganic Chemistry, Biochemistry, Part 2 +15

Sterols. IX. The Selective Halogenation and Dehalogenation of Certain Steroids (Part 1)

Percy L. Julian, William J. Karpel · Journal of the American Chemical Society · 1950 · 45 citations

Secondary Metabolite, Organic Chemistry, Chemistry +16

Sterols. XII. The Partial Synthesis of 4-Pregnene-17α,20,21-triol-3-ones and Reichstein's Substance E¹

Percy L. Julian, Edwin W. Meyer, William J. Karpel et al. · Journal of the American Chemical Society · 1951 · 22 citations

Medicinal Chemistry, Partial Synthesis, Chemical Analysis +12

Sterols. XVI.¹ Cortisone and Analogs. Part 2. 17α,21-Dihydroxy-4-pregnene-3,12,20-trione

Percy L. Julian, Chappelle C. Cochrane, Arthur Magnani et al. · Journal of the American Chemical Society · 1956 · 14 citations

Xvi.1 Cortisone, Chemical Analysis, Biochemistry +14