76996-16-2Relevant academic research and scientific papers
Novel synthesis and antimicrobial activity of 3-substituted 5-bromo-7-methyl-1,2,4-triazolo-[3,4-b]-benzothiazoles
Bhagat,Deshmukh,Kuberkar
, p. 873 - 876 (2012/10/30)
4-Methyl acetanilide (1) on treatment with bromine in acetic acid, followed by hydrolysis with dilute HCl/NaOH solution, yielded 2-bromo-4-methyl aniline (2), which on treatment with sodium thiocyanate in acetic acid afforded 2-amino-4-bromo-6-methyl benzothiazole (3). Compound 3 in ethylene glycol was heated at 150°C with 80% hydrazine hydrate to get 4-bromo-2-hydrazino-6- methyl benzothiazole (4). This hydrazino compound 4 on heating with formic acid for 3 h yielded 4-bromo-2-hydrazinoformyl-6-methyl benzothiazole (5). Same compound 4 when heated independently with formic acid for 6 h/urea for 3 h/carbon disulfide in alkali afforded 5-bromo-7-methyl (6)/5-bromo-3-hydroxy-7- methyl (7)/5-bromo-3-mercapto-7-methyl (8)-1,2,4-triazolo-[3,4-b]- benzothiazoles, respectively. Compound 4 on heating with acetic acid/acetic anhydride gave acetyl benzothiazolyl derivative 9, which on cyclization with orthophosphoric acid yielded 5-bromo-3,7-dimethyl-1,2,4-triazolo-[3,4-b]- benzothiazole (10). All these newly synthesized compounds were screened for antimicrobial activity against Escherichia coli (Gram -ve), Bacillus subtilis (Gram +ve), Erwinia carotovora, and Xanthomonas citri using ampicillin, streptomycin, and penicillin as a standard for comparison.
SUBSTITUTED BENZOAZOLE PDE4 INHIBITORS FOR TREATING PULMONARY AND CARDIOVASCULAR DISORDERS
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Page/Page column 48-49, (2009/05/28)
The invention relates to substituted benzothiazoles, benzoxazoles—and their counterparts having pyridine and pyrimidine rings replacing the benzene ring—that are PDE4 inhibitors useful for treating stroke, myocardial infarct, and cardiovascular inflammatory conditions, to pharmaceutical compositions comprising these compounds, and to methods for the treatment of stroke, myocardial infarct, and cardiovascular inflammatory conditions in a mammal. The compounds have general formula I: in which A and B are carbocycles or heterocycles. A particular embodiment is
The fungicidal benzothiazole methoxyacrylates: Synthesis, conformational analysis and fungicidal activity
Ra, Choon Sup,Jung, Bon Young,Park, Gyoosoon
, p. 793 - 802 (2007/10/03)
Synthesis of a series of novel benzothiazole methoxyacrylate compounds (3-4) based on the antifungal natural product, Strobilurin A is described. Fungicidal activities of 3-4 against six representative fungal diseases and their comparative conformational analyses vs Strobilurin A are accounted.
Benzothiazole derivatives and methods of use
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, (2008/06/13)
The present invention relates to a novel benzothiazole derivative of the following general formula (I) or its (E) , (Z)isomer, and processes for preparation thereof, STR1 in which R1, R2 and R3 independently of one another represent hydrogen, halogen, straight and branched (C1 -C8)alkyl, (C1 -C8)halogenoalkyl or (C1 -C8)alkoxy, X represents N or CH, Y represents a group -OR4, SR5 or STR2 R4, R5, R6 and R7 independently of one another represent hydrogen, straight and branched (C1 -C16)alkyl, (C3 -C8)alkenyl, (C3 -C8)alkynyl, (C3 -C8)cycloalkyl, alkyl substituted with (C1 -C6)alkoxy or (C1 -C6)halogenoalkyl, or represent a substituted phenyl, phenylacyl or benzyl group wherein the possible substituent on the phenyl, phenylacyl or benzyl group includes halogen, straight and branched (C1 -C8)alkyl, (C1 -C8)alkoxy, (C3 -C8)alkenyl, (C3 -C8)alkynyl, phenoxy, nitro, cyano and a five- or six-membered heterocyclic group containing one to four nitrogen atoms. The compound of formula (I) is useful for combating phythopathogenic organisms and fungi present on animal.
Novel benzothiazole derivatives and processes for preparing the same
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, (2008/06/13)
The present invention relates to a novel benzothiazole derivative of the following general formula (I) or its (E), (Z)-isomer, and processes for preparation thereof, in which R1, R2 and R3independently of one another represent hydrogen, halogen, straight and branched (C1-C8)alkyl, (C1-C8) halogenoalkyl or (C1-C8)alkoxy, Xrepresents N or CH, Yrepresents a group -OR4, -SR5 or R4, R5, R6 and R7independently of one another represent hydrogen, straight and branched (C1-C16)alkyl, (C3-C8)alkenyl, (C3-C8)alkynyl, (C3-C8)cycloalkyl, alkyl substituted with (C1-C6)alkoxy or (C1-C6)halogenoalkyl, or represent a substituted phenyl, phenylacyl or benzyl group wherein the possible substituent on the phenyl, phenylacyl or benzyl group includes halogen, straight and branched (C1-C8)alkyl, (C1-C8)alkoxy, (C3-C8)alkenyl, (C3-C8)alkynyl, phenoxy, nitro, cyano and a five- or six-membered heterocyclic group containing one to four nitrogen atoms. The compound of formula (I) is useful for combating phythopathogenic organisms and fungi present on animal.
