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:
2-Nitroethylcyclopentane compounds represented by the formula (I) ##STR1## wherein X represents a ##STR2## R and R.sup.1 each represents a hydrogen atom or a protective group for a hydroxy group, R.sup.2 represents an unsubstituted or substituted alkyl group having 1 to 8 carbon atoms and R.sup.5 represents a hydrogen atom or an alkyl group havng 1 to 4 carbon atoms, which are useful as intermediates for the synthesis of prostaglandin compounds, and a process for preparing the 2-nitroethylcyclopentane compounds of the formula (I).
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 are disclosed an N-propargyl-N-(2-trifluoromethylbenzoyl)-3-substituted benzenesulfonamide represented by the general formula: ##STR1## wherein R.sup.1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a perfluoro-lower alkyl group having 1 to 4 carbon atoms, a nitro group, a cyano group, a carboxyl group or a lower alkoxycarbonyl group; and R.sup.2 represents a hydrogen atom, a halogen atom, a lower alkyl group, a perfluoro-lower alkyl group having 1 to 4 carbon atoms, a lower alkoxy group, a nitro group, a cyano group, a carboxyl group or a lower alkoxycarbonyl group, and a selective herbicide containing the same as an active ingredient.
摘要翻译:公开了由以下通式表示的N-炔丙基-N-(2-三氟甲基苯甲酰基)-3-取代的苯磺酰胺:其中R 1表示卤素原子,低级烷基,低级烷氧基,全氟低级 具有1至4个碳原子的烷基,硝基,氰基,羧基或低级烷氧基羰基; R 2表示氢原子,卤素原子,低级烷基,碳原子数1〜4的全氟低级烷基,低级烷氧基,硝基,氰基,羧基或低级烷氧基羰基 ,以及含有与活性成分相同的选择性除草剂。
摘要:
A process for preparing a 2-thio-2-substituted-alkanoic acid derivative represented by the formula (I) ##STR1## wherein A, R, R.sup.3 and R.sup.4 are as defined hereinafter, which comprises condensing an aldehyde compound of the formula (V)A--CHO (V)wherein A is as defined hereinafter, with a haloform of the formula CHX.sub.3 wherein X is as defined hereinafter and a mercaptan compound of the formula (IV)R.sup.3 SH (IV)wherein R.sup.3 is as defined hereinafter, in the presence of a base to produce a 2-(arylthio or alkylthio)-2-substituted-acetic acid of the formula (III) ##STR2## wherein A and R.sup.3 are as defined hereinafter, and reacting the resulting 2-(arylthio or alkylthio)-2-substituted-acetic acid of the formula (III) with an alkylating agent represented by the formula (II)RZ (II)wherein R and Z are as defined hereinafter, in the presence of at least 2 mols of a base per mol of the 2-(arylthio or alkylthio)-2-substituted-acetic acid, to form the compound of the formula (I) wherein R.sup.4 represents a hydrogen atom and, optionally, converting the resulting compound to the compound of the formula (I) wherein R.sup.4 represents an alkyl group by esterification.
摘要:
4-Oxy-6-alkenyl-bicyclo[3.1.0]hexan-2-one compounds represented by the formula (I) ##STR1## wherein R represents a hydrogen atom or a protective group for a hydroxy group, R.sup.1 represents an alkyl group having 1 to 4 carbon atoms or an aryl group, R.sup.2 represents a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms and R.sup.3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;4-oxycyclopentanone compounds represented by the formula (II) ##STR2## wherein R, R.sup.2 and R.sup.3 are as defined above, R.sup.4 represents a hydroxymethyl group, a methylene group (.dbd.CH.sub.2) or a --COOR.sup.1 group wherein R.sup.1 is as defined above, and R.sup.5 represents an alkyl group having 1 to 4 carbon atoms or an aryl group, useful as prostaglandin precursors; and processes for preparing the same.
摘要:
A new process for preparing 1,2-disubstituted-trans-olefins selectively by reacting specific 2-alkenyl phosphonic acid derivatives with metal hydrides, and a new process for producing the specific 2-alkenylphosphonic acid derivatives. The 1,2-disubstituted-trans-olefins are useful as precursors for synthesis of insect pheromones.
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.