IN PRESENCE OF 500 MG GLUCOSE, BACTERIA FROM SEWAGE TREATMENT PLANT EFFLUENT COMPLETELY DEGRADED 100 MG M-CHLOROBENZOIC ACID/500 ML MEDIUM DURING 7 DAYS. 1ST METAB WAS 3-CHLOROCATECHOL, WHICH WAS CONVERTED INTO 2-HYDROXY-3-CHLOROMUCONIC SEMIALDEHYDE, WHICH WAS IN TURN FURTHER DECOMP.
Plasmid pJP4 permits its host bacterium, strain JMP134, to degrade and utilize as sole sources of carbon and energy 3-chlorobenzoate and 2,4-dichlorophenoxyacetic acid. Mutagenesis of pJ4 by transposons Tn5 and Tn1771 enabled localization of five genes for enzymes involved in these catabolic pathways. Four of the genes, tfdB, tfdC, tfdD, and tfdE, encoded 2,4-dichlorophenol, hydroxylase, dichlorocatechol 1,2-dioxygenase, chloromuconate cycloisomerase, and chlorodienelactone hydrolase, respectively. No function has been assigned to the fifth gene, trans-chlorodiene lactone isomerase, although it may encode a trans-chlorodiene lactone isomerase. Inactivation of genes dichlorocatechol 1,2-dioxygenase, chloromuconate cycloisomerase, and chlorodienelactone hydrolase which encode the transformation of dichlorocatechol to chloromaleylacetic acid, prevented host strain JMP134 from degrading both 3-chlorobenzoate and 2,4-dichlorophenoxyacetic acid, which indicates that the pathways for these two substrates utilize common enzyme for the dissimilation of chlorocatechols. Studies with cloned catabolic genes from pJP4 indicated that whereas all essential steps in the degradation of 2,4-dichlorophenoxyacetic acid are plasmid encoded, the conversion of 3-chlorobenzoate to chlorocatechol is specified by chromosomal genes.
1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989
Synthesis and evaluation of the anticonvulsant activity of a series of 2-amino-1-phenyl-1-propanols derived from the metabolites of the antidepressant bupropion
摘要:
A series of 2-amino-1-phenyl-1-propanols that are structurally related to known metabolites of bupropion,1 (Wellbutrin(R)) were synthesized and evaluated as potential anticonvulsants. The (R*,R*)-2-tert-butylamino-1-(3-trifluoromethylphenyl) propanol 20 had an ED(50) of 16.5 +/- 2.8 mg/kg ip in mice in the maximal electroshock screen and was chosen for further evaluation. Copyright (C) 1996 Elsevier Science Ltd
PROCESS FOR SYNTHESIS OF SYN AZIDO EPOXIDE AND ITS USE AS INTERMEDIATE FOR THE SYNTHESIS OF AMPRENAVIR & SAQUINAVIR
申请人:Council of Scientific & Industrial Research
公开号:US20150011782A1
公开(公告)日:2015-01-08
Disclosed herein is a novel route of synthesis of syn azide epoxide of formula 5, which is used as a common intermediate for asymmetric synthesis of HIV protease inhibitors such as Amprenavir, Fosamprenavir, Saquinavir and formal synthesis of Darunavir and Palinavir obtained by Cobalt-catalyzed hydrolytic kinetic resolution of racemic anti-(2SR,3SR)-3-azido-4-phenyl-1,2-epoxybutane (azido-epoxide).
Co-Catalyzed Synthesis of <i>N</i>-Sulfonylcarboxamides from Carboxylic Acids and Sulfonyl Azides
作者:Yue Fang、Zheng-Yang Gu、Shun-Yi Wang、Jin-Ming Yang、Shun-Jun Ji
DOI:10.1021/acs.joc.8b01300
日期:2018.8.17
A Co-catalyzed effective synthesis of N-sulfonylcarboxamides from the reaction of carboxylicacids and organic azides in the presence of isocyanide has been developed. The protocol has the advantages of short time, low temperature, and being oxidant-free, which provides a new and simple approach for the synthesis of N-sulfonylcarboxamides in good to excellent yields with a broad substrate scope.
N-ARYLAMIDINE-SUBSTITUTED TRIFLUOROETHYL SULFIDE DERIVATIVES AS ACARICIDES AND INSECTICIDES
申请人:BAYER CROPSCIENCE AG
公开号:US20140315898A1
公开(公告)日:2014-10-23
The present invention relates to novel N-arylamide-substituted trifluoroethyl sulfide derivatives of the formula (I)
in which X
1
, X
2
, X
3
, X
4
, R
1
, R
2
, R
3
, n have the meanings given in the description—to their use as acaricides and insecticides for controlling animal pests and to processes and intermediates for their preparation
Fungicides for the control of take-all disease of plants
申请人:Monsanto Company
公开号:US05498630A1
公开(公告)日:1996-03-12
A method of controlling Take-All disease of plants by applying a fungicide of the formula ##STR1## wherein Z1 and Z2 are C and are part of an aromatic ring which is benzothiophene; and A is selected from --C(X)-amine wherein the amine is an unsubstituted, monosubstituted or disubstituted amino radical, --C(O)--SR.sub.3, --NH--C(X)R.sub.4, and --C(.dbd.NR.sub.3)--XR.sub.7 ; B is --W.sub.m --Q(R.sub.2).sub.3 or selected from O-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R.sub.4 ; Q is C, Si, Ge, or Sn; W is --C(R.sub.3).sub.p H.sub.(2-p) --; or when Q is C, W is selected from --C(R.sub.3).sub.p H(.sub.2-p), --N(R.sub.3).sub.m H(.sub.1-m)--, --S(O)p--, and --O--; X is 0 or S; n is 0, 1, 2, or 3; m is 0 or 1; p is 0, 1, or 2; each R and R.sub.2 is independently defined herein; R.sub.3 is C.sub.1 -C.sub.4 alkyl; R.sub.4 is C.sub.1 -C.sub.4 alkyl, haloalkyl, alkoxy, alkylthio, alkylamino, or dialkylamino; and R.sub.7 is C.sub.1 -C.sub.4 alkyl, haloalkyl, or phenyl, optionally substituted with halo, nitro, or R.sub.4 ; or an agronomic salt thereof.
To develop a highly safe measure to treat Alzheimer's disease using a secretase-inhibiting substance, there is provided a compound represented by the following general formula (I) or a salt thereof:
wherein A represents a phenyl group or the like, R
1
represents a chlorine atom, a bromine atom, or a nitro group or the like, R
2
, R
3
, R
4
, and R
5
each represent a hydrogen atom or the like, and L represents CH
2
—CH
2
or CH═CH.