The Preparation of 16α-Hydroxymethylprogesterone

Identification of sensitized photooxidation products of bromacil in water

“…(c) 3-sec-Butyl-5-ketohydantoin (VI). Selective mild oxidation of II (50 mg) in 50% acetic acid (4 mL) with NaBi03 (0.60 g) for 60 min was carried out at room temperature (Heller et al, 1962). After neutralization (NaHC03) and lyophilization, the residue was extracted with dichloromethane.…”

Identity of cryptophlamic acid with erythrophlamic acid

“…3-Mercapto-2-(mercaptomethyl)propionic Acid (3).-3-Bromo-2-(bromomethyl)propionic acid (1,18.0 g, 73.2 mmoles) was dissolved in a cold (0-5°), stirred solution of NaHCO, (6.15 g, 73.2 mmoles) in water (100 ml). The solution was allowed to warm to 25°, and NazSPOa (26.4 g, 0.147 mole) was added in portions during 15 min with the temperature maintained at less than 35°.…”

Microbiological Transformations. III.1 Reduction of the Steroid C-19 Aldehyde Group2

“…Acetylation with acetic anhydride-pyridine afforded a monoacetate derivative. On the basis of (1) Part II in the series: S. M. Kupchan, C. J. Sih, N. Katsui, and O. El Tayeb, J. Am.…”

“…An aliquot of the chloroform extract was chromatographed on Whatman no. 1 paper and developed in a benzene-chloroform-propylene glycol system8 for 6 hr. The paper chromatogram showed only two spots, one of which corresponded to anhydrostrophanthidone, when viewed under the ultraviolet scanner.…”