The antimicrobial activity previously attributed to flavanone Mannich bases was found to be due to their breakdown products, 3-methyleneflavanones. Among the latter compounds, highest potency was observed when the flavanone phenyl ring contained bromine or chlorine substituents. 3-Methylene-2-phenylflavanone (8) was synthesized and shown to be equal to hexachlorophene in tests against representative Gram-positive microorganisms.
3-Methylene flavanones and 3-methylene chromanones
申请人:Miles Laboratories, Inc.
公开号:US04241069A1
公开(公告)日:1980-12-23
Compounds which are 3-methylene flavanones and 3-methylene chromanones having activity against microorganisms are disclosed. The compounds are represented by the general structural formula: ##STR1## wherein: R.sup.1 is a member selected from the group consisting of hydrogen, Br, CH.sub.3 and OCH.sub.3 ; R.sup.2 is selected from the group consisting of hydrogen and ##STR2## wherein R.sup.4 is a member selected from the group consisting of hydrogen, Br, Cl, CH.sub.3, OCH.sub.3, NO.sub.2, N(CH.sub.3).sub.3 and CN; R.sup.5 is selected from the group consisting of hydrogen and Cl, with the proviso that when R.sup.5 is Cl, R.sup.4 is hydrogen or Cl; and R.sup.3 is selected from the group consisting of hydrogen, phenyl, 2-thienyl, 4-pyridyl and naphthyl, with the proviso that when R.sup.3 is naphthyl, R.sup.1 and R.sup.2 are hydrogen.
3-Methylene flavanones and 3-methylene chromanones, antimicrobial composition containing same and method of inhibiting the growth of microorganisms
申请人:MILES LABORATORIES, INC.
公开号:EP0025161A1
公开(公告)日:1981-03-18
Compounds which are 3-methylene flavanones and 3-methylene chromanones having activity against microorganisms are disclosed. The compounds are represented by the general structural formula:
wherein: R' is a member selected from the group consisting of hydrogen, Br, CH3 and OCH3; R2 is selected from the group consisting of hydrogen and
wherein R4 is a member selected from the group consisting of hydrogen, Br, Cl, CH3, OCH3, NO2, N/CH3)2, C(CH3)3 and CN; R' is selected from the group consisting of hydrogen and Cl, with the proviso that when R5 is Cl, R' is hydrogen or Cl; and R3 is selected from the group consisting of hydrogen, phenyl, 2-thienyl, 4-pyridyl and naphthyl, with the proviso that when R3 is naphthyl, R1 and R2 are hydrogen.
WARD, F. E.;GARLING, D. L.;BUCKLER, R. T.;LAWLER, D. M.;CUMMINGS, D. P., J. MED. CHEM., 1981, 24, N 9, 1073-1077
作者:WARD, F. E.、GARLING, D. L.、BUCKLER, R. T.、LAWLER, D. M.、CUMMINGS, D. P.
DOI:——
日期:——
US4241069A
申请人:——
公开号:US4241069A
公开(公告)日:1980-12-23
Antimicrobial 3-methylene flavanones
作者:Frederick E. Ward、David L. Garling、Robert T. Buckler、David M. Lawler、Dennis P. Cummings
DOI:10.1021/jm00141a011
日期:1981.9
The antimicrobial activity previously attributed to flavanone Mannich bases was found to be due to their breakdown products, 3-methyleneflavanones. Among the latter compounds, highest potency was observed when the flavanone phenyl ring contained bromine or chlorine substituents. 3-Methylene-2-phenylflavanone (8) was synthesized and shown to be equal to hexachlorophene in tests against representative Gram-positive microorganisms.