R. Borer

A Stereospecific Synthesis of Vitamin A from 2,2,6‐Trimethyl‐cyclohexanone

Gas chromatographic analysis of ortho esters as a convenient new general method for determining the enantiomeric purities of chiral .delta.-lactones

Lewis acid mediated nucleophilic substitution reactions of 2-alkoxy-3,4-dihydro-2H-1-benzopyrans: regiochemistry and utility in the synthesis of 3,4-dihydro-2H-1-benzopyran-2-carboxylic acids

Selective Ether Cleavage in the Aporphine Series. Conversion of (S)-Bulbocapnine into (S)-Corytuberine and (S)-Corydine Methyl Ether†‡

Steroid Total Synthesis, Part II; (−)-17β-Hydroxy-des-A-androst-9-en-5-one†‡

Totalsynthese von Steroiden. 1. Mitteilung. rac‐17β‐Hydroxydes‐A‐androst‐9‐en‐5‐on

Steroid total synthesis. 11. (+)-Estr-4-ene-3,17-dione from a chiral lactone

Steroid total synthesis. IX. Alternative routes to (+ -)- and (+)-estr-4-ene-3,17-dione and (+ -)-13 beta-13 -ethylgon-4-ene-3,17-dione via novel nitrile intermediates.

Steroid Total Synthesis, Part III. 9β, 10α-Testosterone†‡

Steroid Total Synthesis, Part VIII; (+)‐estr‐4‐ene‐3,17‐dione