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Patent Searching and Data


Matches 751 - 800 out of 836

Document Document Title
JPS55154990A
NEW MATERIAL:A compound shown by the formula I (Ms is methanesulfonyl; R1 and R2 an OH or form di-O-isopropylidene). EXAMPLE: 5-Dioxy-1,2-O-isopropylidene-5-C-(1'-hept-2',5'-trans, trans-dienyl)-3-O- mesyl-α-D-xylo-pentofuranose. USE: A...  
JPS55154989A
NEW MATERIAL:A compound shown by the formula I (R is H or tetrahydropyranyl). EXAMPLE: 5-Dioxy-1,2-O-isopropylidene-5-C-(1'-kept-2',5'-trans, trans-dienyl)-3- O-tetrahydro-pyranyl-α-D-xylo-pentfuranose. USE: A synthetic intermediate for...  
JPS5543509B2  
JPS55139398A  
JPS55500441A  
JPS5594394A
PURPOSE: To facilitate the separation and the purification of a lactone which is an intermediate of L-ascorbic acid useful as a food additive, by oxidizing an easily available, low-cost glucofuranose in an organic solvent in the presence...  
JPS5594395A
PURPOSE: To prepare the title compound useful as an intermediate of L-ascorbic acid for medical use, economically, in an industrial scale, by oxidizing diacetonesorbose with oxygen(-containing) gas, in an alcohol, in the presence of a Pd...  
JPS55500336A  
JPS5569596A
PURPOSE: To obtain a glucofuranurono-6,3-lactone useful as an intermediate for ascorbic acid industrially advantageously, by reacting a glucofuranose with molecular oxygen in the presence of palladium or platinum as a catalyst in an orga...  
JPS558514B2  
JPS551795B2  
JPS54141718A  
JPS5429497B2  
JPS5429496B2  
JPS54109972A
NEW MATERIAL:4-(S)-[5-Methoxycarbonyl-1-(S)-hydroxypentyl]-5-(R) -hydroxymethyl-imidazolidinone of formula I (when R1 is CH2C6H5, R2 is the group of formula II, or when R1 is OH, R2 is the group of formula III. EXAMPLE: Benzyl 2,3-diamin...  
JPS5481272A
PURPOSE: To obtain the title substance usable as vegetable growth requlators, fungicides, medicines, or an intermediate for preparing them, in high yield, by subjecting a specific substance to methylation, mesylation, epoxidation, and re...  
JPS5470428A
PURPOSE: To provide a carcinostatic agent containing a specific aromatic aldehyde or its derivative as an effective component. CONSTITUTION: An aromatic aldehyde or its derivative having carcinostatic activity is mixed with proper carrie...  
JPS5459276A  
JPS5446786A  
JPS5414913A
PURPOSE: To obtian daunosamine or its acid salt, a raw material for carcinostatic antibiotic daunomycin and adriamycin, without requiring separation or purification, by a series of reactions of inexpensive D-glucose to protect OH groups ...  
JPS545917A  
JPS53137970A
PURPOSE: Sterylglucoside cyclic acetal derivs. I (R1 is β-sitosteryl, campesteryl, stigumasteryl, cholesteryl or their mixture; R2 is lower alkyl or phenyl), e.g. steryl-4,6-propylidene-β-D-glucopiranoside.  
JPS53127494A  
JPS5330717B2  
JPS5328431B1  
JPS5327766B2  
JPS5373598A
PURPOSE: Saccharide derivs. I [R is alkyl, alkanoyl, aryl, alkyl or alkenyl; A is halogen, N3, NHR2, N(R2)2 or OR1; B is OR1; R1 is H, arylsulfonyl or alkylsulfonyl; R2 is H or alkyl], e.g. 1,6-andoro-2-azido-4-O-benzyl-2-deoxy3-O-methan...  
JPS5373564A  
JPS5359668A
PURPOSE: To conveniently obtain ribose derivatives, useful as intermediate for manufacturing C-nucleosides which are important in biochemical, pharmaceutical and medical fields, on an industrial scale from readily available tetrahalogeno...  
JPS5337666A  
JPS5331687A  
JPS5323973A
PURPOSE: To prepare orthoesters in high yield and high steric selectivity under mild condition, by the reaction of halogenose with a hydroxyl compound having increased nucleophilic property by the substitution with trialkyl tin group.  
JPS5318599A  
JPS52142065A  
JPS52142092A  
JPS52133991A
PURPOSE: Title compounds of formula I (R is H, well-known monovalent amino-protecting radical; X1 is alkyl, aryl; X' is H, alkyl, aryl; radical of formula II and III is cycloalkylidene, tetrahydropyranylidene, and radical III is linked t...  
JPS52100489A  
JPS5283835A  
JPS5271478A
PURPOSE: Title compounds of formula I [R is H, alkyl, aryl; Z is radical of formula II (P,P' are H, alkyl, aryl), cyclohexylidene, tetrahydropyranylidene]; for example, 3,,4,-anhydro-penta-N-ethoxycarbonyl-4,,,6,,-O-cyclohexylide nekanam...  
JPS5268196A
PURPOSE: Bicyclomycin derivatives of the formula I [R1 is group of the formula II (Ra is residue of nucleophilic compound, organo-sulfonyloxy, OH, alkoxy, aralkoxy, acyloxy, etc.), the formula III, or the formula IV (Rd is alkylidene, or...  
JPS5236671A  
JPS5217401A  
JPS5210274A
PURPOSE: A process for preparing the titled compound which is an intermediate for the synthesis of one of the vitamins, natural (+)-biotin, from a novel starting material obtained from D-mannose.  
JPS51133263A  
JPS51118714A  
JPS51105097A  
JPS51105093A  
JPS51101114A  
JPS5195060A  
JPS5175072A  

Matches 751 - 800 out of 836