Exemplary oxygen protecting groups include, but are not limited to, methyl, methoxylmethyl MOM, methylthiomethyl MTM, t butylthiomethyl, phenyldimethylsilyl methoxymethyl SMOM, benzyloxymethyl BOM, p methoxybenzyloxymethyl PMBM, 4 methoxyphenoxy methyl p AOM, guaiacolmethyl GUM, t butoxymethyl, 4 pentenyloxymethyl POM, siloxymethyl, 2 methoxyethoxymethyl MEM, 2, 2, 2 trichloroethoxymethyl, bis 2 chloroethoxy methyl, 2 trimethylsilyl ethoxymethyl SEMOR, tetrahydropyranyl THP, 3 bromotetrahydropyranyl, tetrahydrothiopyranyl, 1 methoxycyclohexyl, 4 methoxytetrahydropyranyl MTHP, 4 methoxytetrahydrothiopyranyl, 4 methoxytetrahydrothiopyranyl S, S dioxide, 1 2 chloro 4 methyl phenyl 4 methoxypiperidin 4 yl CTMP, 1, 4 dioxan 2 yl, tetrahydrofuranyl, tetrahydrothiofuranyl, 2, 3, 3a, 4, 5, 6, 7, 7a octahydro 7, 8, 8 trimethyl 4, 7 methanobenzofuran 2 yl, 1 ethoxyethyl, 1 2 chloroethoxy ethyl, 1 methyl 1 methoxyethyl, 1 methyl 1 benzyloxyethyl, 1 methyl 1 benzyloxy 2 fluoroethyl, 2, 2, 2 trichloroethyl, 2 trimethylsilylethyl, 2 phenyl selenyl ethyl, t butyl, allyl, p chlorophenyl, p methoxyphenyl, 2, 4 dinitrophenyl, benzyl Bn, p methoxybenzyl, 3, 4 dimethoxybenzyl, o nitrobenzyl, p nitrobenzyl, p halobenzyl, 2, 6 dichlorobenzyl, p cyanobenzyl, p phenylbenzyl, 2 picolyl, 4 picolyl, 3 methyl 2 picolyl N oxido, diphenylmethyl, p, p dinitrobenzhydryl, 5 dibenzosuberyl, triphenylmethyl, О± naphthyldiphenylmethyl, p methoxyphenyldiphenylmethyl, di p methoxyphenyl phenylmethyl, tri p methoxyphenyl methyl, 4 4 bromophenacyloxyphenyl diphenylmethyl, 4, 4, 4 tris 4, 5 dichlorophthalimidophenyl methyl, 4, 4, 4 tris levulinoyloxyphenyl methyl, 4, 4, 4 tris benzoyloxyphenyl methyl, 3 imidazol 1 yl bis 4, 4 dimethoxyphenyl methyl, 1, 1 bis 4 methoxyphenyl 1 pyrenylmethyl, 9 anthryl, 9 9 phenyl xanthenyl, 9 9 phenyl 10 oxo anthryl, 1, 3 benzodithiolan 2 yl, benzisothiazolyl S, S dioxido, trimethylsilyl TMS, triethylsilyl TES, triisopropylsilyl TIPS, dimethylisopropylsilyl IPDMS, diethylisopropylsilyl DEIPS, dimethylthexylsilyl, t butyldimethylsilyl TBDMS, t butyldiphenylsilyl TBDPS, tribenzylsilyl, tri p xylylsilyl, triphenylsilyl, diphenylmethylsilyl DPMS, t butylmethoxyphenylsilyl TBMPS, formate, benzoylformate, acetate, chloroacetate, dichloroacetate, trichloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxyacetate, phenoxyacetate, p chlorophenoxyacetate, 3 phenylpropionate, 4 oxopentanoate levulinate, 4, 4 ethylenedithio pentanoate levulinoyldithioacetal, pivaloate, adamantoate, crotonate, 4 methoxycrotonate, benzoate, p phenylbenzoate, 2, 4, 6 trimethylbenzoate mesitoate, methyl carbonate, 9 fluorenylmethyl carbonate Fmoc, ethyl carbonate, 2, 2, 2 trichloroethyl carbonate Troc, 2 trimethylsilyl ethyl carbonate TMSEC, 2 phenylsulfonyl ethyl carbonate Psec, 2 triphenylphosphonio ethyl carbonate Peoc, isobutyl carbonate, vinyl carbonate, allyl carbonate, t butyl carbonate BOC, p nitrophenyl carbonate, benzyl carbonate, p methoxybenzyl carbonate, 3, 4 dimethoxybenzyl carbonate, o nitrobenzyl carbonate, p nitrobenzyl carbonate, S benzyl thiocarbonate, 4 ethoxy 1 napththyl carbonate, methyl dithiocarbonate, 2 iodobenzoate, 4 azidobutyrate, 4 nitro 4 methylpentanoate, o dibromomethyl benzoate, 2 formylbenzenesulfonate, 2 methylthiomethoxy ethyl, 4 methylthiomethoxy butyrate, 2 methylthiomethoxymethyl benzoate, 2, 6 dichloro 4 methylphenoxyacetate, 2, 6 dichloro 4 1, 1, 3, 3 tetramethylbutyl phenoxyacetate, 2, 4 bis 1, 1 dimethylpropyl phenoxyacetate, chlorodiphenylacetate, isobutyrate, monosuccinoate, E 2 methyl 2 butenoate, o methoxyacyl benzoate, О± naphthoate, nitrate, alkyl N, N, N, N tetramethylphosphorodiamidate, alkyl N phenylcarbamate, borate, dimethylphosphinothioyl, alkyl 2, 4 dinitrophenylsulfenate, sulfate, methanesulfonate mesylate, benzylsulfonate, and tosylate Ts <a href=https://clomid.pics>clomiphene</a> com 20 E2 AD 90 20Bula 20Do 20Remedio 20Viagra 20 20Viagra 20Yliopiston 20Apteekki viagra yliopiston apteekki One of the biggest problems for Orr and his team is that Detroit is geographically huge given its population of only 700, 000