51062-76-1

Upstream product

• 3470-50-6 6-Hydroxy-1-tetralone 
• 105-36-2 ethyl bromoacetate 
• 1078-19-9 6-methoxy-3,4-dihydro-1(2H)-naphthalenone 

Downstream Products

• 88642-56-2 C₂₁H₂₃NO₆S 

Relevant academic research and scientific papers

Synthesis and antimicrobial activity of new 7β-(benzo[a] dihydrocarbazolyloxyacetyl)-substituted cephalosporins

Selected 7β-(benzo[a]dihydrocarbazolyloxyacetyl)-substituted cephalosporins (1a-e) were synthesised and tested for their antimicrobial activity against Gram-positive and Gram-negative clinical pathogens. All compounds synthesised (1a-e) showed an in vitro antimicrobial activity similar to that of ceftriaxone and cefpirome against the Gram-positive bacteria, and superior to that of penicillin and cefaclor against pen-R Staphylococcus aureus species. Like all β-lactam agents, compounds 1a-e were in an inactive Minimum Inhibitory Concentration (MIC > 32 μg/ml) against methicillin-resistant S. aureus species. Furthermore, as expected, no cross-resistance was observed against the erythromycin-resistant Staphylococcus pyogenes strain. Finally, it is worth underlining that compounds 1a and 1e showed a similar activity to that of ceftriaxone and superior to cefaclor against penicillin-resistant Streptococcus pneumoniae isolates, a key respiratory tract infection (RTI) causing pathogen difficult to treat with currently marketed antibiotics.

Synthesis of 2-(N-substituted amino)-6-hydroxy-1,2,3,4-tetrahydronaphthalen-1-ol derivatives

trans-6-Hydroxy-2-(1-methyl-3-phenylpropyl)amino-1,2,3,4-tetrahydronaphth alen-1-ol (8a), trans-6-hydroxy-2-(1-methyl-2-phenoxyethyl)amino-1,2,3,4-tetrahydronaphtha len-1-ol (8b) and trans-1,6-dihydroxy-2-(1-methyl-3-phenylpropyl)amino-1,2,3,4-tetrahydronap hthalene-5-carboxamide (9a) were synthesized as a part of our search for useful cardiovascular agents. 2-(N-Substituted amino)-6-alkoxy-1,2,3,4-tetrahydronaphthalen-1-ols (10-31) having various substituents at the 5-, 6- and 7-positions of the naphthalene ring were prepared by a five-step sequence of reactions starting from 3,4-dihydro-1(2H)-naphthalenone derivatives (36). Furthermore 2-(N-substituted amino)-1-indanol derivatives (33) and 6-(N-substituted amino)-2-hydroxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-5-ols (34, 35) were obtained by the reductive alkylation of the corresponding amino alcohols with carbonyl compounds. These N-substituted amino alcohols (8-35) were tested for vasodilating activity in anesthetized dogs and for β-blocking activity using isolated guinea pig atrial preparations.