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1

SIMPLE AND CONVENIENT PROCEDURE FOR THE PREPARATION OF ACID CHLORIDES OF PENICILLINS

Mata, Ernesto G., Boschetti, Carlos E., Mascaretti, Oreste A.

Journal:

Organic Preparations and Procedures International

Year:

1995

Language:

english

File:

PDF, 219 KB

english, 1995

2

ChemInform Abstract: Recent Advances in the Chemistry of β-Lactam Compounds as Selected Active-Site Serine β-Lactamase Inhibitors

Oreste A. Mascaretti, Gerardo O. Danelon, Eduardo L. Setti, Maria Laborde, Ernesto G. Mata

Journal:

Year:

2000

File:

PDF, 27 KB

2000

3

ChemInform Abstract: Recent Applications of Organotin Oxides/Hydroxides and Alkylstannonic Acids in Organic Synthesis

Oreste A. Mascaretti, Ricardo L. E. Furlan, Claudio J. Salomon, Ernesto G. Mata

Journal:

Year:

2000

File:

PDF, 25 KB

2000

4

PMR spectral analysis of some peptide alkaloids

Ching-Jer Chang, Edward W. Hagaman, Ernest Wenkert, Manuel González Sierra, Oreste A. Mascaretti, Vera M. Merkuza, Edmundo A. Rúveda

Journal:

Year:

1974

Language:

english

File:

PDF, 348 KB

english, 1974

5

Peptide alkaloids of Discaria longispina and Scutia buxifolia

Vera M. Merkuza, Manuel Gonzĺez Sierra, Oreste A. Mascaretti, Edmundo A. Rúveda, Ching-Jer Chang, Ernest Wenkert

Journal:

Year:

1974

Language:

english

File:

PDF, 303 KB

english, 1974

6

Peptide alkaloids of Scutia buxifolia

Manuel Gonzalez Sierra, Oreste A. Mascaretti, Vera M. Merkuza, Evangelina L. Tosti, Edmundo A. Ruveda, Ching-Jer Chang

Journal:

Year:

1974

Language:

english

File:

PDF, 369 KB

english, 1974

7

Novel synthesis of 6,6-dibromo-2′-Z-chloromethyl and 2′-Z-bromomethyl anhydropenicllins from 6,6-dibromo 2β-(chloromethyl) and 2β-(bromomethyl)-2α-methyl-penam-3α-carboxylic acid via anhydropenicillin rearrangement

Gerardo O. Danelon, Erneslon G. Mata, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

1996

Language:

english

File:

PDF, 243 KB

english, 1996

8

Cleavage of carboxylic esters effected by organotin oxides and hydroxides under classical heating and microwave irradiation. A comparative study

Ricardo L.E. Furlán, Ernesto G. Mata, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

1996

Language:

english

File:

PDF, 258 KB

english, 1996

9

Synthesis and β-lactamase inhibitory evaluation of novel 6α-halo-2β-chloromethyl-2α-methylpenam-3α-carboxylic acids and their sulfones and 6α-halo-2β-mercaptobenzothiazolylmethyl-2α-methylpenam-3α-carboxylic acids

Gerardo O. Danelon, Ernesto G. Mata, Oreste A. Mascaretti, Javier Girardini, Martin Marro, Oscar A. Roveri

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1995

Language:

english

File:

PDF, 203 KB

english, 1995

10

Synthesis and porcine pancreatic elastase inhibitory evaluation of 6α-(sulfonyl)oxy-and 6α-chloropenicillanate sulfone esters and 3α-(acyloxy)methyl-6α-chloropenam sulfones

Carlos E. Boschetti, Ernesto G. Mata, Oreste A. Mascaretti, Julia A. Cricco, Gabriela Coux, Oscar A. Roveri

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1995

Language:

english

File:

PDF, 256 KB

english, 1995

11

Synthesis and elastase inhibitory activity of 6α-chloro-2,2-dimethyl-3α-(pivaloyloxy)methylpenam sulfone, 6α-chloro-2,2-dimethyl-3-exo-methylenepenam sulfone, benzyl and methyl 6α-substituted penicillanate sulfones

Carlos E. Boschetti, Oreste A. Mascaretti, Julia A. Cricco, Oscar A. Roveri

Journal:

Bioorganic & Medicinal Chemistry

Year:

1995

Language:

english

File:

PDF, 587 KB

english, 1995

12

A convenient one-pot synthesis of 2β-(O-dibenzyl-phosphate)-oxymethyl-2α-methyl penam 3α-carboxylic acid benzyl ester and 3β-(O-dibenzyl-phosphate)-3α-methyl cepham 4α-carboxylic acid benzyl ester

Patricia V. Yovaldi, Marı́a de los Angeles Laborde, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 234 KB

english, 2004

13

Fluorinated penicillins and other β-lactams: chemistry and biological activity

Gerardo O. Danelon, Oreste A. Mascaretti

Journal:

Journal of Fluorine Chemistry

Year:

1992

Language:

english

File:

PDF, 1.90 MB

english, 1992

14

Synthesis of optically active (pivaloyloxy)methyl 2',3'-substituted 4'-oxoazetidin-1'-yl-3-methylbut-2-enoates from 6-apa

Carmen Somoza, Oreste A. Mascaretti

Journal:

Year:

1988

Language:

english

File:

PDF, 599 KB

english, 1988

15

Recent developments in chemical deprotection of ester functional groups

Claudio J. Salomon, Ernesto G. Mata, Oreste A. Mascaretti

Journal:

Year:

1993

Language:

english

File:

PDF, 2.31 MB

english, 1993

16

Selective detachment of Boc-protected amino acids and peptides from Merrifield, PAM and Wang resins by trimethyltin hydroxide

Ricardo L.E. Furlán, Ernesto G. Mata, Oreste A. Mascaretti, Clara Peña, Marcelo P. Coba

Journal:

Year:

1998

Language:

english

File:

PDF, 753 KB

english, 1998

17

Selective oxidation of penicillin derivatives to penicillin (1R) and (1S)-sulfoxides using dimethyldioxirane

Gerardo O. Danelon, Ernesto G. Mata, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 247 KB

english, 1993

18

Mild and effective cleavage of esters with bis(tributyltin) oxide: A useful application in the deprotection of Pom penicillanate esters

Ernesto G Mata, Oreste A Mascaretti

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 259 KB

english, 1988

19

Bis (tributyltin) oxide. A mild, neutral and selective reagent for cleavage of esters. Scope and limitation of the reaction

Claudio J. Salomon, Ernesto G. Mata, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 309 KB

english, 1991

20

Chemo- and stereoselective reduction of (pivaloyloxy)methyl 6,6-dihalopenicillanates by trineophyltin hydride: Selective synthesis of 6β-halopenicillanates

Ernesto G. Mata, Oreste A. Mascaretti, Adriana E. Zuñiga, Alicia B. Chopa, Julio C. Podestá

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 285 KB

english, 1989

21

Butylstannonic acid catalyzed transesterification of carboxylic esters

Ricardo L.E. Furlán, Ernesto G. Mata, Oreste A. Mascaretti

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 314 KB

english, 1998

22

Synthesis and β-lactamase inhibitory activity of 6-fluoropenicillanic acids

Gerardo O. Danelon, Maria Laborde, Oreste A. Mascaretti, Suvana B. Boggio, Oscar A. Roveri

Journal:

Bioorganic & Medicinal Chemistry

Year:

1993

Language:

english

File:

PDF, 1.04 MB

english, 1993

23

Synthesis and human leukocyte elastase inhibitory evaluation of phosphate triesters and acyl phosphates of penam sulfides and sulfones

Marı́a Laborde, Germán Pezzenati, Patricia Yovaldi, Oreste A. Mascaretti, Rolando C. Rossi, Juan Pablo Rossi

Journal:

Bioorganic & Medicinal Chemistry

Year:

2001

Language:

english

File:

PDF, 153 KB

english, 2001

24

Scope and Mechanism of Deprotection of Carboxylic Esters by Bis(tributyltin) Oxide

Salomon, Claudio J., Mata, Ernesto G., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1994

Language:

english

File:

PDF, 993 KB

english, 1994

25

Efficient, non-acidolytic method for the selective cleavage of N-Boc amino acid and peptide phenacyl esters linked to a polystyrene resin

Furlán, Ricardo L. E., Mata, Ernesto G., Mascaretti, Oreste A.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1998

Language:

english

File:

PDF, 104 KB

english, 1998

26

Selective deprotection of phenacyl, benzyl and methyl esters of N-protected amino acids and dipeptides and N-protected amino acids benzyl ester linked to resins with bis(tributyltin) oxide

Salomon, Claudio J., Mata, Ernesto G., Mascaretti, Oreste A.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1996

Language:

english

File:

PDF, 799 KB

english, 1996

27

Stereoselective synthesis of 6-fluoropenicillanate analogs of .beta.-lactamase inhibitors

Mata, Ernesto G., Setti, Eduardo L., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1990

Language:

english

File:

PDF, 601 KB

english, 1990

28

Highly chemoselective and stereocontrolled catalytic hydrogenolysis of the carbon-6-halogen bond of (pivaloyloxy)methyl 6,6-dihalo- and 6-halopenicillanates by 5% palladium on calcium carbonate and 5% rhodium on alumina

Setti, Eduardo L., Belinzoni, Diego U., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 535 KB

english, 1989

29

Stereochemical aspects of the biosynthesis of spectinomycin

Otsuka, Hideaki, Mascaretti, Oreste A., Hurley, Laurence H., Floss, Heinz G.

Journal:

Journal of the American Chemical Society

Year:

1980

Language:

english

File:

PDF, 553 KB

english, 1980

30

Synthesis of analogues of 6?-bromopenicillanic acid and penicillanic acid S,S-dioxide. Part 1. Synthesis of 3?-derivatives of 6?-bromo-2,2-dimethylpenam and 2,2-dimethylpenam S,S-dioxide

Mata, Ernesto G., Setti, Eduardo L., Mascaretti, Oreste A., Boggio, Silvans B., Roveri, Oscar A.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1988

Language:

english

File:

PDF, 776 KB

english, 1988

31

A Practical Method for the Disposal of Organotin Residues from Reaction Mixtures

Salomon, Claudio J., Danelon, Gerardo O., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

2000

Language:

english

File:

PDF, 36 KB

english, 2000

32

A Convenient Preparation of Trineophyltin Deuteride and Some Applications Including the Reduction of Organic Halides and .alpha.-Halo Ketones

Podesta, Julio C., Giagante, Nelda N., Zuniga, Adriana E., Danelon, Gerardo O., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1994

Language:

english

File:

PDF, 289 KB

english, 1994

33

Nucleophilic SN2 displacements on (pivaloyloxy)methyl 6.alpha.-[(fluorosulfonyl)oxy]penicillanate

Setti, Eduardo L., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1986

Language:

english

File:

PDF, 442 KB

english, 1986

34

Biosynthesis of the Antibiotic Chlorothricin: Assignment of the Carbon-13 Magnetic Resonance Spectrum

Mascaretti, Oreste, Chang, Ching-jer, Floss, Heinz G.

Journal:

Journal of Natural Products

Year:

1979

Language:

english

File:

PDF, 429 KB

english, 1979

35

Biosynthesis of the macrolide antibiotic chlorothricin

Mascaretti, Oreste A., Chang, Ching-Jer, Hook, Derek, Otsuka, Hideaki, Kreutzer, Ernest F., Floss, Heinz G.

Journal:

Year:

1981

Language:

english

File:

PDF, 681 KB

english, 1981

36

Highly chemoselective and stereocontrolled catalytic hydrogenolysis of the carbon-6-halogen bond of (pivaloyloxy)methyl 6,6-dihalopenicillanate by chlorotris(triphenylphosphine)rhodium(I) in homogeneous phase

Setti, Eduardo L., Mascaretti, Oreste A.

Journal:

Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 403 KB

english, 1989

37

Synthesis of (pivaloyloxy)methyl 6?-fluoropenicillanate

Setti, Eduardo L., Mascaretti, Oreste A.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1988

Language:

english

File:

PDF, 314 KB

english, 1988

38

Stereoselective synthesis and X-ray crystallographic analysis of mixed 6,6-dihalo penicillanates

Belinzoni, Diego U., Mascaretti, Oreste A., Alzari, Pedro M., Punte, Graciela, Faerman, Carlos, Podjarny, Alberto

Journal:

Canadian Journal of Chemistry

Year:

1985

Language:

english

File:

PDF, 346 KB

english, 1985

39

Stereospecific synthesis, 1 H and 13 C NMR spectroscopy, and X-ray crystallographic studies of 6,6-dibromo-3α-cyano-2,2-dimethylpenam-(1 R )- S -oxide

Salomon, Claudio J., Mascaretti, Oreste A., Strouse, Charles E., Punte, G.

Journal:

Canadian Journal of Chemistry

Year:

1991

Language:

english

File:

PDF, 439 KB

english, 1991

40

REGIO- AND STEREOSELECTIVE ALCOHOLYSIS OF (R)-STYRENE OXIDE WITH BIS-TRIBUTYLTIN OXIDE AND BIS-CHLORODIBUTIYLTIN OXIDE

Salomon, Claudio J., Laborde, Maria A., Sierra, Manuel G., Mascaretti, Oreste A.

Journal:

Main Group Metal Chemistry

Year:

1998

Language:

english

File:

PDF, 1.07 MB

english, 1998

41

Recent Applications of Organotin Oxides/Hydroxides and Alkylstannonic Acids in Organic Synthesis

Mascaretti, Oreste A., Furlán, Ricardo L. E., Salomon, Claudio J., Mata, Ernesto G.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

1999

Language:

english

File:

PDF, 421 KB

english, 1999

42

Bacteria versus Antibacterial Agents (an Integrated Approach) || New Antibacterial Drugs in Development That Act on Novel Targets

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 1.23 MB

2003

43

Bacteria versus Antibacterial Agents (an Integrated Approach) || Front Matter

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 1.61 MB

2003

44

Bacteria versus Antibacterial Agents (an Integrated Approach) || Compounds That Interfere with Tetrahydrofolic Acid Biosynthesis Sulfonamides and Trimethoprim

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 228 KB

2003

45

Bacteria versus Antibacterial Agents (an Integrated Approach) || Antibacterial Agents That Cause Damage to DNA 5-Nitrofurans

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 118 KB

2003

46

Bacteria versus Antibacterial Agents (an Integrated Approach) || Inhibitors of the 50S Ribosomal Subunit Macrolides, Lincosamides, and Streptogramins

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 638 KB

2003

47

Bacteria versus Antibacterial Agents (an Integrated Approach) || Antibacterial Agents That Cause DNA Damage in Obligate Anaerobic Organisms 5-Nitroimidazoles

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 104 KB

2003

48

Bacteria versus Antibacterial Agents (an Integrated Approach) || An Inhibitor of the 50S Ribosomal Subunit Chloramphenicol

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 241 KB

2003

49

Bacteria versus Antibacterial Agents (an Integrated Approach) || Inhibitors of the Formation of the First Peptide Bond Oxazolidinones

Mascaretti, Oreste A.

Year:

2003

File:

PDF, 263 KB

2003