L- -tert.-butylester

Br A I (HjChC-O N CO-O-ClCH.Ij H H3C 0-Si(CH3]3 c=c / H3C OCH3 ch3 b -C-COOCH3 1 ch3 N-tert.-Butyloxycar-bonyl-3,3-dimeth-yl-asparagimii are l-tert.-butylester-4-methylester 76 75-76 2... [Pg.517]

HsCj-CO-CHz-CO-OCzHs co-ch3 -CH 1 COOC2H5 3-Acetyl-N-tert-butyloxycarbonyl-asp araginsaure-l-tert.-butylester-4-ethylester 48 Ol 1... [Pg.518]

Butandisaure 2-Isopropyl- -l-tert.-butylester E21b, 1701 (CO-Fe - COOH)... [Pg.938]

Amino- -l-tert.-butylester-4-(4-nitro-phenyl-ester) 383... [Pg.820]

An Nitrone lassen sich Alkene 1,3-dipolar addieren. Dies nutzt eine asymmetrische Syn-these von L-5-Oxa-prolin aus. Das Nitron aus 2,3 5,6-Di-0-isopropyliden-mannose-oxim mit Glyoxylsaure-tert.-butylester in situ) cyclisiert mit Ethen, wobei das (JS)-Dihstereo-mer spontan kristallisiert (3R)- bzw. (3S)-3-tert.-Butyloxycarbonyl-2-(2,3 5,6-di-0-iso-propyliden-ct-D-mannofuranosyl) l,2-oxazolidin[9i%, 54% de (S43%].Nachder Abspaltung des Aldose-Restes erhalt man (S)-5-Oxa-prolin-tert.-butylester (3-tert.-Butyl-oxycarbonyl-1,2-oxazolidin 90% Schmp. 52-530)4 ... [Pg.613]

Die intermediaren Di-tert.-butyloxycarbonyl-amine I konnen auch zu den tert.-Butyloxy-carbonyl-aminen II gespalten werden man erhalt so z.B. aus l,4-Dichlor-2-buten N-(4-Chlor-2-butenyl) Carbamidsaure-tert.-butylester in 71% Ausbeute5. [Pg.702]

Chemical Name N-Carboxy-p-alanyl-L-tryptophyl-L-methionyl-L-aspartylphenyl-L-alaninamide N-tert-butylester... [Pg.2657]

Alkoxy-l, 3,2-oxazapho.spholan-2-sulfidea>>2 Thiophosphorsdure- O, O-di-tert.-butylester-dimethylamid403... [Pg.739]

Diphenyl- -butylester E2, 270 Diphenyl- -tert.-butylester XII/1, 284 Diphenyl- -[a-(3,5-dioxo-l,2-diphenyl-pyrazolidin-4-yl)-benzylester] E2, 274 Diphenyl- -(2,5-dioxo-hexylester) E2, 274 Diphenyl- -f -(l,3-dioxo-2-indanyl)-benzylester] E2,274... [Pg.989]

Hydroxy-l-mcthyl-cthan- -bis-[2,2.2-trichlor-tert.-butylester] XII/1, 480 1-Hydroxy-l-methvl-elhan- -dibutylester XII/1,... [Pg.1036]

N-Benzyloxycarbonyl- -phthalimi-domethylester XV/1, 404 N-Benzyloxycarbonyl- -(5-pyrazolylester) XV/2, 119 N-[l -(4-Biphenylyl)-1 -methyl-ethoxycarbonyl] XV/1, 145 -tert.-butylester-Hydrochlorid XV/1, 391, 393... [Pg.11]

Glycin XV/2, 419 /L-Glutaminsaure-(x-methyl-ester) XV/2, 425 [L-Glutamyl(> -tert.-butylester)-L-alanyl-glycin]-methylester XV/2, 406... [Pg.59]

N-Hydroxy- -tert.-butylester E4, 256 (Cl -> NR-OH) N-Methoxy-N-methyl- -ethyl-ester X/l, 1198... [Pg.232]

Carbamidsaure N-(l-Hydroxy-2,2,2-trifluor-ethyl)- -tert.-butylester E14a/2, 60 (R-CHO/ RO-CO-NH2)... [Pg.401]

Bernsteinsaure 2-Amino- -4-tert.-butylester-l-methylester (Hydro-chlorid) XV/1, 52... [Pg.671]

Sulfon [( )-3,3-Dimethyl-l-butenyl]-propyl- E19a, 413 (En-HgCl En-S02-R) Thiokohlensanre -S-butylester-O-tert.-butylester E4, 108 (SM -> SR)... [Pg.677]

Carbamidsaure N-(3-Methylthio-propyl)- -tert.-butylester E19a, 243 [N-(l-COOH) - N-(l -H)]... [Pg.680]

Ethen 2-Nitro-l-(2,4,5-trimethyl-phenyl)- E15/1, 1175 (R2N-CH = CH-N02 + ArH) Kohlensaure -tert.-butylester-(4-nitro-phenylester) XV/1, 117 Peroxld tert,-Butyl-[2(bzw. 4)-nitro-benzoyl]- E13/1, 798 (R-COOH 4- R-O-OH)... [Pg.888]

Diazo- -di-tert.-butylester E14b, 1087 (-CH2- + R-S02-N3) lsopropyl-(l-methyl-1-nitro-ethyl)- ... [Pg.925]

Butandisaure 2-Hydroxy-2-methyl- -4-tert.-butylester-l-ethylester E21b, 1809 (Ar—SO —CH2 — COOR/R—MgX + H3C-CO-COOR Al-Hg) 1,3-Dioxolan 4,5-Bis-[methoxyme-thyl]-2-(l -hydroxy-1 -methyl-allyl)- E2lb, 1255 [(RO)2CH-CO-CH3 + H2C=CH —MgBr] Oxetane 3.3-Diethoxy-2-ethoxycar-bonyl-2-methyl- E21c, 3138 [H3C-CO-COOR +... [Pg.938]

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