1.alpha.-hydroxy vitamin D.sub.4 and novel intermediates and ana

1.alpha.-Hydroxy-24-EPI-vitamin D.sub.4

1.alpha.-Hydroxycalcioic acid and esters thereof

1.beta.,15.alpha.-di hydroxy-1.alpha.-methyl-5.alpha.-androstane

1.beta.,7,8-trihydroxy vitamin D.sub.2, 1.smallcircle.,7,8-trihy

10 Oxo-4,5-dihydro-10H-benzo 5,6 cycloheph[1,2-B]pyrryls

10,10-Dihydro-10-(( substituted-carbonyl)imino)-10-phenyl-10H-ph

10,10-dihydro-10-[(substituted-carbonyl)imino]-10-phe nyl-10H-ph

10,10a-Dihydro-1H-thiozino[4,3-a,]-indole-1,4(3H)-diones

10,11-Dihydro-11-oxodibenzo[b,f]thiepin compounds

10,11-dihydro-5-alkyl-12-substituted-10,5-(iminomethano)-5H-d ib

10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imines

10,11-dihydro-dibenzo-[b,f][1,4]-thiazepin derivatives

10,11-methylenedioxy camptothecins

10,11-methylenedioxy-20(RS)-camptothecin analogs

10-(Piperazinyl)thieno[3,4-b][1,5]benzoxazepines and 10-(piperaz

10-Alkyl-10-deazaminopterins

10-deacetyl-14.beta.-hydroxybaccactine III derivatives, a proces

10-desacetoxytaxol derivatives

10-substituted 1,8-dihydroxy-9(10H) anthracenone pharmaceuticals