0000000000234088

AUTHOR

Paola Milla

showing 3 related works from this author

Synthesis of (E)- and (Z)-29-methylidyne-2,3-oxidosqualene derivatives as inhibitors of liver and yeast oxidosqualene cyclase

2002

The synthesis of (E)- and (Z)-29-methylidyne-2,3-oxidosqualene derivatives is described starting from the C22 and C17 squalene aldehyde monobromohydrins. The conversion was achieved by means of a Wittig reaction, followed by desilylation of the terminal acetylene. For trisubstituted 1,3-enynes, preliminary alkylation with a suitable allyl bromide was performed. A new procedure for the synthesis of squalene aldehyde C27, C22 and C17 monobromohydrins is also described. Some of the new compounds behaved as inhibitors of pig liver and yeast oxidosqualene cyclase and were time-dependent inhibitors of the animal enzyme.

chemistry.chemical_classificationAllyl bromideoxidosqualene derivatives; oxidosqualene cyclase; squaleneStereochemistryAlkylationsqualeneAldehydeYeast23-Oxidosqualenechemistry.chemical_compoundSqualeneEnzymechemistryWittig reactionoxidosqualene cyclaselipids (amino acids peptides and proteins)oxidosqualene derivatives
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ChemInform Abstract: Synthesis of (E)- and (Z)-29-Methylidyne-2,3-oxidosqualene Derivatives as Inhibitors of Liver and Yeast Oxidosqualene Cyclase.

2010

The synthesis of (E)- and (Z)-29-methylidyne-2,3-oxidosqualene derivatives is described starting from the C22 and C17 squalene aldehyde monobromohydrins. The conversion was achieved by means of a Wittig reaction, followed by desilylation of the terminal acetylene. For trisubstituted 1,3-enynes, preliminary alkylation with a suitable allyl bromide was performed. A new procedure for the synthesis of squalene aldehyde C27, C22 and C17 monobromohydrins is also described. Some of the new compounds behaved as inhibitors of pig liver and yeast oxidosqualene cyclase and were time-dependent inhibitors of the animal enzyme.

chemistry.chemical_classificationAllyl bromideStereochemistryGeneral MedicineAlkylationAldehydeYeast23-Oxidosqualenechemistry.chemical_compoundSqualeneEnzymechemistryWittig reactionlipids (amino acids peptides and proteins)ChemInform
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Dual Constant Domain-Fab: A novel strategy to improve half-life and potency of a Met therapeutic antibody

2016

The kinase receptor encoded by the Met oncogene is a sensible target for cancer therapy. The chimeric monovalent Fab fragment of the DN30 monoclonal antibody (MvDN30) has an odd mechanism of action, based on cell surface removal of Met via activation of specific plasma membrane proteases. However, the short half-life of the Fab, due to its low molecular weight, is a severe limitation for the deployment in therapy. This issue was addressed by increasing the Fab molecular weight above the glomerular filtration threshold through the duplication of the constant domains, in tandem (DCD-1) or reciprocally swapped (DCD-2). The two newly engineered molecules showed biochemical properties comparable…

0301 basic medicineCancer ResearchMice SCIDCancer targeted therapy0302 clinical medicineMice Inbred NODEpidermal growth factor receptorPhosphorylationbiologyChemistryImmunoglobulin Fab FragmentsAntibodies MonoclonalGeneral MedicineArticlesProto-Oncogene Proteins c-metHalf-lifeCell biologyOncology030220 oncology & carcinogenesisColonic NeoplasmsMetMolecular MedicineFemalemedicine.symptomSignal transductionAntibodySignal Transductionmedicine.drug_classColonAntibody; Cancer targeted therapy; Fab; Half-life; Met; Protein engineering; Cancer Research; Genetics; Molecular MedicineAntineoplastic AgentsMonoclonal antibody03 medical and health sciencesImmunoglobulin Fab FragmentsProtein DomainsCell Line TumormedicineGeneticsAnimalsHumansFabAntibodyCell growthMolecular biology030104 developmental biologyHEK293 CellsMechanism of actionHepatocyte Growth Factor ReceptorA549 Cellsbiology.proteinProtein engineering
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