Clavulanic acid and its derivatives: structure elucidation of clavulanic acid and the preparation of dihydroclavulanic acid, isoclavulanic acid, esters and related oxidation produc... von BROWN, A. G, CORBETT, D. F, GOODACRE, J, HARBRIDGE, J. B, TREFOR HOWARTH, T, PONSFORD, R. J, STIRLING, I, KING, T. J

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Studies related to the structures of the olivanic acids MM 13902, MM 4550 and MM 17880 : Three β-lactam antibiotics from streptomyces olivaceus von Brown, Allan G., Corbett, David F., Eglington, A.John, Howarth, T.Trefor

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Clavulanic acid. Rearrangement to 3, 4-disubstituted pyrroles von Davies, J.Sydney, Howarth, T.Trefor

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The chemistry of clavulanic acid: Some reactions of esters under neutral, acidic and basic conditions von Brown, Allan G., Howarth, T.Trefor, Ponsford, Roger J.

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Synthesis of ethyl 3-methyl-7-oxo-4-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate and the reaction of 4-acetoxyazetidin-2-one with ethyl α-diazoacetoacetate von Brooks, Gerald, Howarth, T. Trefor, Hunt, Eric

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The formation and x-ray crystal structure analysis of isoclavulanic acid von Brown, Allan G., Howarth, T.Trefor, Stirling, Irene, King, Trevor J.

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Wittig reactions with β-lactam carbonyl functions. The effect of C-7 substitution on the chemistry of penicillins and clavulanic acid derivatives von GILPIN, M. L, HARBRIDGE, J. B, HOWARTH, T. T

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Biogenetic-type synthesis of .beta.-resorcylic acids. Isolation and characterization of the aldol intermediate von Harris, Thomas Munson, Howarth, T. Trefor

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Preparation and biogenetic-type aromatizations of tetraacetic acid (3,5,7-trioxooctanoic acid) von Howarth, T. Trefor, Murphy, George P, Harris, Thomas M

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Nuclear modification of clavulanic acid: preparation of optically active 1-oxaceph-3-ems von BROOKS, G, GASSON, B. C, HOWARTH, T. T, HUNT, E, KONG LUK

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Pyrroles and related compounds. Part XXVII. Syntheses of porphyrins with a nuclear carboxy-group von Howarth, T. Trefor, Jackson, Anthony H., Kenner, George W.

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Clavulanic acid, a novel β-lactam isolated from Streptomyces clavuligerus; X-ray crystal structure analysis von Howarth, T. Trefor, Brown, Allan G., King, Trevor J.

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Models of the biogenesis of polyketide-type phenolic ethers von Harris, Thomas Munson, Howarth, T. Trefor, Carney, Robert L

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Structures of olivanic acid derivatives MM 4550 and MM 13902; two new, fused β-lactams isolated from Streptomyces olivaceus von Brown, Allan G., Corbett, David F., Eglington, A. John, Howarth, T. Trefor

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Methyl 2-hydroxy-4-methoxy-6-phenylbenzoate and methyl 2-hydroxy-6-methoxy-4-phenylbenzoate: reassignment of a structure von Howarth, T. Trefor, Harris, Thomas M

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PROCESS FOR PRODUCING ESTERS OF CLAVULANIC ACID von COLE,MARTIN,GB, READING,CHRISTOPHER,GB, HOWARTH,TREFOR T.,GB

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Structure elucidation of MM 17880, a new fused β-lactam antibiotic isolated from Streptomyces olivaceus; a mild β-lactam degradation reaction von Corbett, David F., Eglington, A. John, Howarth, T. Trefor

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Oxidation of clavulanic acid and a ready synthesis of the 7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene ring system von Corbett, David F., Howarth, T. Trefor, Stirling, Irene

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Pyrroles and related compounds. Part XXVIII. β-Keto-esters in the porphyrin series von Cox, Michael T., Howarth, T. Trefor, Jackson, Anthony H., Kenner, George W.

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Pyrroles and related compounds. Part XXVI. Pyrrole β-keto-esters von Howarth, T. Trefor, Jackson, Anthony H., Judge, Jean, Kenner, George W., Newman, David J.

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