摘要:
A novel process for producing allyl alcohol derivatives having the formula ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; and R.sup.2 represents an alkyl group which can have an inert substituent; and X represents a hydrogen atom, a hydroxy, an alkoxy, a tetrahydropyranyloxy or a silyloxy group; which are useful intermediates for the syntheses of prostaglandins and analogous compounds is disclosed. In the process, the allyl alcohol derivatives are produced starting from .beta.-keto-esters and azides through a series of reactions.
摘要:
Novel .beta.-phenoxy- or substituted phenoxy-ethanol compounds or esters thereof expressed by the formula ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group, R.sup.2 is a hydrogen atom or a substituent, Y is --OH group or group ##STR2## R.sup.3 is an alkyl group, and n is an integer of 1 to 3. These compounds have juvenile hormone activities, and are useful for hormonal pest control and increased production of silkworm cocoons.
摘要:
A process for preparing a bicyclic .gamma.-lactone represented by the formula (I) ##SPC1##wherein R represents a hydrogen atom or a straight or branched chain alkyl group having 1 to 4 carbon atoms and n is an integer of 1 to 6, which comprises condensing a cycloalkene diol compound represented by the formula (II) ##SPC2##wherein n is as defined above, with an orthocarboxylic acid ester represented by the formula (III)r--ch.sub.2 --c(or.sup.1).sub.3 (iii)wherein R is as defined above and R.sup.1 represents a straight or branched chain alkyl group having 1 to 4 carbon atoms, in the presence of an acidic catalyst.
摘要:
New L-phenylalanine dehydrogenases produced by a microorganism belonging to the genus Sporosarcina or Bacillus, new microorganisms capable of l-phenylalanine dehydrogenase and belonging to the genus Sporosarcina or Bacillus, a process for production of L-phenylalanine dehydrogenase using the microorganisms, and processes for production of L-amino acids using the enzymes or the microorganisms.
摘要:
There is provided an advantageous process for production of EPA by a gene recombinant technique wherein genes coding for biosynthesis enzymes for eicosapentaenoic acid (EPA) useful as pharmaceuticals, agrochemicals, foods, feeds or the like is obtained from microorganisms. EPA is produced by obtaining genes coding for eicosapentaenoic acid (EPA) biosynthesis enzymes, constructing a plasmid by joining the genes to a vector, transforming E. coli with the plasmid, and culturing the transformed E. coli.
摘要:
A fluorocarbon anion exchanger which is composed of a fluorocarbon polymer comprising a perfluorocarbon main chain and a pendant chain attached to the main chain, characterized in that the pendant chainhas a terminal group represented by the formula: ##STR1##
摘要:
Nerve growth factor production accelerating agents containing oxazopyrroloquinolines, pyrroquinolinequinones and/or their esters as active ingredient are provided. As the oxazopyrroloquinolines and their esters exhibit such production accelerating activity, they are suitably utilized for preventing and treating functional disorders of central nervous system, particularly, Alzheimer's dementia, cerebral ischemia and spinal trauma, as well as for functional disorders of peripheral nervous system, particularly, peripheral nervous system trauma and diabetic neurosis. As the pyrroquinolinequinones and their esters exhibit strong nerve growth factor production accelerating activity, they are suitably utilized for preventing and treating functional disorders of peripheral nervous system, particularly, peripheral nervous system trauma, diabetic neurosis, etc.
摘要:
Nerve growth factor production accelerating agents containing oxazopyrroloquinolines, pyrroquinolinequinones and/or their esters as active ingredient are provided. As the oxazopyrroloquinolines and their esters exhibit such production accelerating activity, they are suitably utilized for preventing and treating functional disorders of central nervous system, particularly, Alzheimer's dementia, cerebral ischemia and spinal trauma, as well as for functional disorders of Peripheral nervous system, particularly, peripheral nervous system trauma and diabetic neurosis. As the pyrroquinolineguinones and their esters exhibit strong nerve growth factor production accelerating activity, they are suitably utilized for preventing and treating functional disorders of peripheral nervous system, particularly, peripheral nervous system trauma, diabetic neuropathy, etc.
摘要:
There is provided an advantageous process for production of EPA by a gene recombinant technique wherein genes coding for biosynthesis enzymes for eicosapentaenoic acid (EPA) useful as pharmaceuticals, agrochemicals, foods, feeds or the like is obtained from microorganisms. EPA is produced by obtaining genes coding for eicosapentaenoic acid (EPA) biosynthesis enzymes, constructing a plasmid by joining the genes to a vector, transforming E. coli with the plasmid, and culturing the transformed E. coli.
摘要:
A drug for hepatic diseases, particularly an ameliorant for hepatic functions and a drug for hepatitis, containing docosahexaenoic acid or a derivative thereof (DHA) as an active ingredient. The DHA as the active drug ingredient, though also taking part in the metabolism of cholesterol formed in vivo and exuding into the plasma, mainly metabolizes that cholesterol specifically which is accumulated in hepatic microsomes as a result of hypometabolism or dysbolism to thereby bring about the recovery of flexibility of a microsome lipid membrane, thus enhancing the enzymatic activity, and to significantly reduce a triglyceride, thus being prospective as an ameliorant for hepatic functions in treating fatty liver, hepatic cirrhosis, etc. The invention also provides a drug for hepatitis, which can inhibit the induction of hepatitis which is one of the factor causative of chronic hepatitis, hepatocirrhosis, hepatocellular carcinoma, hepatic insufficiency, etc.