摘要:
Compounds of the formula ##STR1## wherein: Y is an alkylene bridge of 3-9 carbon atoms;Z is N or HC;R is hydrogen or lower-alkyl of 1-5 carbon atoms, with the proviso that when Z is N, R is lower-alkyl;R.sub.1 and R.sub.2 are hydrogen, halogen, lower-alkyl, lower-alkoxy, nitro, lower-alkoxycarbonyl or trifluoromethyl; andHet is selected from specified heterocyclic groups,are useful and antiviral agents, particularly against picornaviruses, including numerous strains of rhinovirus.
摘要翻译:式IMA的化合物其中:Y是3-9个碳原子的亚烷基桥; Z是N或HC; R为氢或1-5个碳原子的低级烷基,条件是当Z为N时,R为低级烷基; R 1和R 2是氢,卤素,低级烷基,低级烷氧基,硝基,低级烷氧基羰基或三氟甲基; 并且Het选自指定的杂环基,是有用的和抗病毒剂,特别是针对小核糖核酸病毒,包括许多鼻病毒株。
摘要:
Apple pomace, the residue left from juice extraction, can be employed as a substrate for citric acid production using Aspergillus niger as the fermentation agent.
摘要:
A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an intermediate for optically active Vitamins E and K.
摘要:
The present invention provides a method of preparing a furan derivative comprising the steps of (a) converting a monosaccharide to provide a keto-intermediate product; and (b) dehydrating the keto-intermediate product to provide a furan derivative; wherein the keto-intermediate product is pre-disposed to forming keto-furanose tautomers in solution. The method may further comprise a step of oxidizing the furan derivative to provide a furandicarboxylic acid or a furandicarboxylic acid derivative.
摘要:
A method to produce protein in Aspergillus niger's sleeping spores using single-stranded RNA is provided. The method includes three steps: culture of Aspergillus niger and collection of spores, pretreatment of Aspergillus niger spores, and electroporation of Aspergillus niger spores using HDEN method. Non-germinated spores are used as a starting material for introduction of exogenous molecules. The exogenous protein coding single-stranded RNA is introduced into the resting spores of Aspergillus niger by employing the HDEN electrotransformation technique to express protein. This method is simple and fast, the effect is excellent, and the transformation rate reaches more than 90%.
摘要:
The purpose of the present invention is to provide an organism having an ergothioneine productivity that is capable of easily producing ergothioneine within a short period of time at a high yield, as compared with a conventional technology, and, therefore, enables ergothioneine production on an industrial scale. This purpose can be achieved by a transformed fungus into which a gene encoding enzyme (1) or genes encoding enzymes (1) and (2) have been inserted and in which the inserted gene(s) are overexpressed. (1) an enzyme catalyzing a reaction of synthesizing hercynyl cysteine sulfoxide from histidine and cysteine in the presence of S-adenosyl methionine, iron (II) and oxygen. (2) An enzyme catalyzing a reaction of synthesizing ergothioneine from hercynyl cysteine sulfoxide using pyridoxal 5′-phosphate as a coenzyme.
摘要:
The present invention provides a method of preparing a furan derivative comprising the steps of (a) converting a monosaccharide to provide a keto-intermediate product; and (b) dehydrating the keto-intermediate product to provide a furan derivative; wherein the keto-intermediate product is pre-disposed to forming keto-furanose tautomers in solution. The method may further comprising a step of oxidizing the furan derivative to provide a furandicarboxylic acid or a furandicarboxylic acid derivative.
摘要:
A glucanase enzyme is described. In addition, there is described a nucleotide sequence coding for the glucanase enzyme and a promoter for controlling its expression.
摘要:
A method of preparing .alpha.-1,4-glucan lyase enzymes is described. The method comprises isolating the enzymes from a fungally infected algae. The amino acid sequences of the enzymes have been determined. The nucleic acid sequences coding for the enzymes have also been determined.