628686-76-0

Upstream product

• 21577-57-1 2-amino-4,6-dimethoxybenzoic acid 
• 122-51-0 orthoformic acid triethyl ester 

Downstream Products

• 887468-82-8 5-hydroxymethyl-7-methoxy-3-(4-methoxy-phenyl)-3H-quinazolin-4-one 
• 887468-84-0 5-isopropenyl-7-methoxy-3-(4-methoxy-phenyl)-3H-quinazolin-4-one 
• 887468-79-3 7-methoxy-3-(4-methoxy-phenyl)-4-oxo-3,4-dihydro-quinazoline-5-carboxylic acid methyl ester 
• 887468-92-0 7-methoxy-3-(4-methoxy-phenyl)-5-phenyl-3H-quinazolin-4-one 
• 887468-63-5 8-iodo-5,7-dimethoxy-3-(4-methoxy-phenyl)-3H-quinazolin-4-one 
• 887468-66-8 5-allyloxy-7-methoxy-3-(4-methoxy-phenyl)-3H-quinazolin-4-one 
• 887468-65-7 5-hydroxy-6-iodo-7-methoxy-3-(4-methoxyphenyl)-3H-quinazolin-4-one 
• 887468-67-9 6-allyl-5-hydroxy-7-methoxy-3-(4-methoxy-phenyl)-3H-quinazolin-4-one 
• 887468-68-0 5-hydroxy-7-methoxy-3-(4-methoxyphenyl)-6-propyl-3H-quinazolin-4-one 
• 887468-56-6 trifluoro-methanesulfonic acid 7-methoxy-3-(4-methoxy-phenyl)-4-oxo-3,4-dihydro-quinazolin-5-yl ester 
• 887468-73-7 trifluoro-methanesulfonic acid 7-hydroxy-3-(4-hydroxy-phenyl)-4-oxo-3,4-dihydro-quinazolin-5-yl ester 
• 628687-11-6 7-benzyloxy-5-methoxy-3-(4-benzyloxyphenyl)-4(3H)-quinazolinone 

Relevant academic research and scientific papers

Synthesis and characterization of 3-arylquinazolinone and 3-arylquinazolinethione derivatives as selective estrogen receptor beta modulators

On the basis of the structure of genistein, a new series of 3-arylquinazolines was prepared and tested for their estrogen receptor (ER) α and β affinities. 5,7-Dihydroxy-3-(4-hydroxyphenyl)-4(3H)- quinazolinone (1aa) acts as an agonist on both ER subtypes. It has 62-fold higher binding affinity [IC50(ERβ) = 179 nM] and 38-fold higher functional potency in a transcription assay [EC50(ERβ) = 76 nM] with ERβ than with ERα, thus improving upon the selectivity of genistein. All of the analogues showed preferential binding affinity for ERβ. Many are also more potent in activating transcription by ERβ than by ERα. Transformation of the C=O functionality at position 4 into a C=S group provided 5,7-dihydroxy-3-(4-hydroxyphenyl)-4(3H)-quinazolinethione (1ba), which acts as an agonist on both ER subtypes but has 56-fold higher binding affinity for ERβ over ERα [IC50(ERβ) = 47 nM] and 215-fold higher potency in the transcription assay [EC50(ERβ) = 13 nM]. These ERβ-selective compounds may represent valuable tools in understanding the differences in structure and biological function of ERβ and ERα.

3-ARYLQUINAZOLINE DERIVATIVES AS SELECTIVE ESTROGEN RECEPTOR BETA MODULATORS

Novel quinazoline derivatives possessing activity as estrogen receptor beta (ERβ) modulators are provided which have the general formula I wherein X is O or S; A and B are each independently CR'" or N; R, R' and R" are each independently hydrogen, alkyl, benzyl, p-methoxybenzyl, allyl, or Si(R4) 3, wherein at least one of R, R' and R" is hydrogen; R'" is hydrogen, halogen, CF3, OR5, S(O)nR6, NR7R8, cycloalkyl or alkyl; R1, R2 and R3 are each independently hydrogen, halogen, CF 3, OR5, S(O)nR6, NR7R8, cycloalkyl or alkyl; R4 is a alkyl; R5, R6, R7 and R8 in each functional group are each independently hydrogen, cycloalkyl or alkyl; and n is an integer from 0 to 2. In addition, a method is provided for preventing, inhibiting or treating the progression or onset of pathological conditions associated with the estrogen receptor and to pharmaceutical compositions containing such compounds. "