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1

Structure and activity of avermectins and milbemycins in animal health

Wesley L. Shoop, Helmut Mrozik, Michael H. Fisher

Journal:

Veterinary Parasitology

Year:

1995

Language:

english

File:

PDF, 1.04 MB

english, 1995

2

The Chemistry and Pharmacology of Avermectins

Fisher, Michael H., Mrozik, Helmut

Journal:

Annual Review of Pharmacology

Year:

1992

Language:

english

File:

PDF, 570 KB

english, 1992

3

Photoisomers of avermectins

Mrozik, Helmut, Eskola, Philip, Reynolds, Glenn F., Arison, Byron H., Smith, Graham M., Fisher, Michael H.

Journal:

Journal of Organic Chemistry

Year:

1988

Language:

english

File:

PDF, 590 KB

english, 1988

4

ChemInform Abstract: Synthesis of gem-Difluoro-avermectin Derivatives: Potent Anthelmintic and Anticonvulsant Agents.

Peter T. Meinke, Wesley L. Shoop, Bruce F. Michael, Timothy A. Blizzard, Gerard R. Dawson, Michael H. Fisher, Helmut Mrozik

Journal:

Year:

1999

File:

PDF, 30 KB

1999

5

Preparation of paraherquamide labeled with deuterium or tritium

Timothy A. Blizzard, Avery Rosegay, Helmut Mrozik, Michael H. Fisher

Journal:

Journal of Labelled Compounds and Radiopharmaceuticals

Year:

1990

Language:

english

File:

PDF, 173 KB

english, 1990

6

Radical-induced oxidation of oxahydrindene (hexahydrobenzofuran) portion of 22,23-dihydroavermectin b1a: Identification of autooxidation products

John D. Stong, James V. Pivnichny, Helmut Mrozik, Frank S. Waksmunski

Journal:

Journal of Pharmaceutical Sciences

Year:

1992

Language:

english

File:

PDF, 361 KB

english, 1992

7

A chemiluminescent assay for measuring avermectin binding sites

James M. Schaeffer, Janet H. Stiffey, Helmut Mrozik

Journal:

Analytical Biochemistry

Year:

1989

Language:

english

File:

PDF, 477 KB

english, 1989

8

Chemical degradation of avermectin B1

Timothy A Blizzard, Helmut Mrozik, Michael H Fisher

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 221 KB

english, 1988

9

Conversion of avermectin B1 to 19-epi-avermectin B1

Timothy Blizzard, Lori Bostrom, Gaye Margiatto, Helmut Mrozik, Michael Fisher

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 317 KB

english, 1991

10

Aliphatic replacements of the biphenyl moiety of the nonpeptidyl growth hormone secretagogues L-692,429 and L-692,585

Lin Chu, Helmut Mrozik, Michael H. Fisher, Jeannette E. Brown, Kang Cheng, Wanda W.-S. Chan, William R. Schoen, Matthew J. Wyvratt, Bridget S. Butler, Roy G. Smith

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1995

Language:

english

File:

PDF, 261 KB

english, 1995

11

Synthesis of spiroketal-modified avermectin analogs: 23-nor-23-oxa- and 23-nor-23-thia-avermectins

Peter T. Meinke, Stephen P. O'Connor, Michael H. Fisher, Helmut Mrozik

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 298 KB

english, 1994

12

Chemical Modification of Paraherquamide. 4. 1-N-substituted analogs

Timothy A. Blizzard, Gaye Margiatto, Helmut Mrozik, James M. Schaeffer, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 275 KB

english, 1991

13

Chemical modification of paraherquamide. 3. Vinyl ether modified analogs

Timothy A. Blizzard, Gaye Margiatto, Helmut Mrozik, James M. Schaeffer, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 283 KB

english, 1991

14

Reactivity of an epoxy-spiroketal within avermectin B2a

Ronald C. Newbold, Thomas L. Shih, Helmut Mrozik, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 247 KB

english, 1993

15

Synthesis of an avermectin-nemadectin hybrid.

Thomas L. Shih, Mark A. Holmes, Helmut Mrozik, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1991

Language:

english

File:

PDF, 234 KB

english, 1991

16

An unusual twist in the synthesis and hydrolysis of the 23,24-epoxide of 22,23-dihydroavermectin B1a

Thomas L. Shih, Helmut Mrozik, Mark A. Holmes, Bryon H. Arison, George A. Doss, Frank Waksmunski, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 284 KB

english, 1992

17

Synthesis of ring-contracted, 25-nor-6,5-spiroketal-modified avermectin derivatives

Peter T. Meinke, Stephen P. O'Connor, Helmut Mrozik, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 266 KB

english, 1992

18

A wittig approach to novel C24 and C25-substituted avermectins.

Thomas L. Shih, Helmut Mrozik, Mark A. Holmes, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 257 KB

english, 1990

19

The total synthesis of argiopine (argiotoxin-636)

Thomas L. Shih, Jose Ruiz-Sanchez, Helmut Mrozik

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 230 KB

english, 1987

20

Synthesis, reactivity, and bioactivity of avermectin B1-3,4-oxide

Timothy A. Blizzard, Helmut Mrozik, Franz A. Preiser, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 289 KB

english, 1990

21

The preparation and utilization of paraherquamide-2-O-methyl imidate in the synthesis of 14-O-substituted paraherquamide derivatives

Peter J. Sinclair, James M. Schaeffer, W.L. Shoop, Helmut Mrozik

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1992

Language:

english

File:

PDF, 270 KB

english, 1992

22

New, potent anthelmintic and acaricidal agents: 4″-deoxy-4″-thio-substituted avermectin derivatives

Peter T. Meinke, Stephen P. O'Connor, D.A. Ostlind, W.L. Shoop, Michael H. Fisher, Helmut Mrozik

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1993

Language:

english

File:

PDF, 470 KB

english, 1993

23

Avermectin B1-8,9-oxide: reactivity, bioactivity, and stereochemistry.

Timothy A. Blizzard, Helmut Mrozik, Michael H. Fisher

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1993

Language:

english

File:

PDF, 172 KB

english, 1993

24

Synthesis of gem-difluoro-avermectin derivatives: Potent anthelmintic and anticonvulsant agents

Peter T. Meinke, Wesley L. Shoop, Bruce F. Michael, Timothy A. Blizzard, Gerard R. Dawson, Michael H. Fisher, Helmut Mrozik

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1998

Language:

english

File:

PDF, 259 KB

english, 1998

25

The microbial formation of the 23-keto derivative from avermectin B2a in soil

Vincent P. Gullo, August J. Kempf, John G. Macconnell, Helmut Mrozik, Byron Arison, Irving Putter

Journal:

Pest Management Science

Year:

1983

Language:

english

File:

PDF, 349 KB

english, 1983

26

4″-Deoxy-4″-aminoavermectins with potent broad spectrum antiparasitic activities

Helmut Mrozik, Philip Eskola, Byron H. Arison, Bruce O. Linn, Aino Lusi, Alexander Matzuk, Thomas L. Shih, Maureen Tischler, Frank S. Waksmunski, Matthew J. Wyvratt, Timothy A. Blizzard, Gaye M. Margi

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1995

Language:

english

File:

PDF, 257 KB

english, 1995

27

Determination of avermectins in plasma at nanogram levels using high-performance liquid chromatography with flourescence detection

John W. Tolan, Philip Eskola, David W. Fink, Helmut Mrozik, Laurie A. Zimmerman

Journal:

Journal of Chromatography A

Year:

1980

Language:

english

File:

PDF, 775 KB

english, 1980

28

Cleavage of the spiroketal portion of avermectin B2a

Thomas L. Shih, Helmut Mrozik, Mark A. Holmes, Michael H. Fisher

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 213 KB

english, 1990

29

Avermectin analogs with a spacer between the aglycone and the disaccharide

Timothy Blizzard, Gaye Margiatto, Bruce Linn, Helmut Mrozik, Michael Fisher

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1991

Language:

english

File:

PDF, 293 KB

english, 1991

30

Synthesis of avermectin B1-4″,4″a-oxide: a precursor of potent anthelmintic agents

Peter T. Meinke, Peter Sinclair, Helmut Mrozik, Steve O'Connor, D.A. Ostlind, W.L. Shoop, B.H. Arison, Michael H. Fisher

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1992

Language:

english

File:

PDF, 335 KB

english, 1992

31

[3H]Paraherquamide binding to caenorhabditis elegans: Studies on a potent new anthelmintic agent

James M. Schaeffer, Timothy A. Blizzard, John Ondeyka, Robert Goegelman, Peter J. Sinclair, Helmut Mrozik

Journal:

Biochemical Pharmacology

Year:

1992

Language:

english

File:

PDF, 509 KB

english, 1992

32

Ivermectin, a new broad-spectrum antiparasitic agent

Chabala, John C., Mrozik, Helmut, Tolman, Richard L., Eskola, Philip, Lusi, Aino, Peterson, Louis H., Woods, Mary F., Fisher, Michael H., Campbell, William C.

Journal:

Journal of Medicinal Chemistry

Year:

1980

Language:

english

File:

PDF, 417 KB

english, 1980

33

Novel anti-imfiammatory steroids. The [3,2-d]-phenyltriazoles.

John H. Fried, Paul Buchschacher, Helmut Mrozik

Journal:

Year:

1963

Language:

english

File:

PDF, 274 KB

english, 1963

34

Argiopine differentiates between vertebrate and invertebrate glutamate binding sites

James M. Schaeffer, Jose Ruiz-Sanchez, Thomas L. Shih, Helmut Mrozik

Journal:

Pesticide Biochemistry and Physiology

Year:

1989

Language:

english

File:

PDF, 530 KB

english, 1989

35

Effect of liver enzymes on the mutagenicity of nitroheterocyclic compounds: activation of 3a,4,5,6,7,7a-hexahydro-3-(1-methyl-5-nitro-1H-imidazol-2-yl)- 1,2-benzisoxazole and deactivation of nitrofurans and nitroimidazoles in the Ames test

Helen R. Skeggs, Rosalind M. Berglund, William J.A. VandenHeuvel, Helmut Mrozik, Peter G. Wislocki, Frank J. Wolf

Journal:

Mutation Research/Genetic Toxicology

Year:

1984

Language:

english

File:

PDF, 490 KB

english, 1984

36

Substituted imidazo[1,2-a]pyridine-2-carbamate anthelmintics

Bochis, Richard J., Olen, Leonard E., Waksmunski, Frank S., Mrozik, Helmut, Eskola, Philip, Kulsa, Peter, Wilks, George, Taylor, Joyce E., Egerton, John R.

Journal:

Journal of Medicinal Chemistry

Year:

1981

Language:

english

File:

PDF, 516 KB

english, 1981

37

N-Bromoacetaminde as a selective reagent for the functionalization of the 10,11-double bond of avermectin B1a

Shih, Thomas L., Mrozik, Helmut, Ruiz-Sanchez, Jose, Fisher, Michael H.

Journal:

Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 662 KB

english, 1989

38

Avermectin acyl derivatives with anthelmintic activity

Mrozik, Helmut, Eskola, Philip, Fisher, Michael H., Egerton, John R., Cifelli, Sam, Ostlind, Dan A.

Journal:

Journal of Medicinal Chemistry

Year:

1982

Language:

english

File:

PDF, 875 KB

english, 1982

39

Heterocyclic Steroids in the Antiinflammatory Series 1

Mrozik, Helmut, Buchschacher, Paul, Hannah, John, Fried, John H.

Journal:

Journal of Medicinal Chemistry

Year:

1964

Language:

english

File:

PDF, 790 KB

english, 1964

40

Synthesis of 13-epi-22,23-dihydroavermectin B1 aglycon

Jones, Todd K., Mrozik, Helmut, Fisher, Michael H.

Journal:

Journal of Organic Chemistry

Year:

1992

Language:

english

File:

PDF, 440 KB

english, 1992

41

4-Amino-6-(trichloroethenyl)-1,3-benzenedisulfonamide, a new, potent fasciolicide

Mrozik, Helmut, Bochis, Richard J., Eskola, Philip, Matzuk, Alexander, Waksmunski, Frank S., Olen, Leonard E., Schwartzkopf, George, Grodski, Alex, Linn, Bruce O.

Journal:

Journal of Medicinal Chemistry

Year:

1977

Language:

english

File:

PDF, 412 KB

english, 1977

42

Base-catalyzed isomerization of avermectins

Pivnichny, James V., Arison, Byron H., Preiser, Franz A., Shim, Jung Sook K., Mrozik, Helmut

Journal:

Journal of Agricultural and Food Chemistry

Year:

1988

Language:

english

File:

PDF, 370 KB

english, 1988

43

A novel fragmentation reaction of avermectin aglycones

Blizzard, Timothy A., Margiatto, Gaye M., Mrozik, Helmut, Fisher, Michael H.

Journal:

Journal of Organic Chemistry

Year:

1993

Language:

english

File:

PDF, 343 KB

english, 1993

44

Synthesis of 1,19-Aza-1,19-desoxy-avermectin B 1a : The First Avermectin Macrolactam

Meinke, Peter T., Arison, Byron, Culberson, J. Chris, Fisher, Michael H., Mrozik, Helmut

Journal:

Journal of Organic Chemistry

Year:

1998

Language:

english

File:

PDF, 102 KB

english, 1998

45

Chemical modification of paraherquamide. 2. Replacement of the C-14 methyl group

Blizzard, Timothy A., Mrozik, Helmut, Fisher, Michael H., Schaeffer, James M.

Journal:

Journal of Organic Chemistry

Year:

1990

Language:

english

File:

PDF, 624 KB

english, 1990

46

Synthesis and biological activity of 13-epi-avermectins: potent anthelmintic agents with an increased margin of safety

Blizzard, Timothy A., Margiatto, Gaye M., Mrozik, Helmut, Shoop, Wesley L., Frankshun, Robert A., Fisher, Michael H.

Journal:

Journal of Medicinal Chemistry

Year:

1992

Language:

english

File:

PDF, 709 KB

english, 1992

47

Total synthesis of (.+-.)-5-O-methyllicoricidin

Shih, Thomas L., Wyvratt, Matthew J., Mrozik, Helmut

Journal:

Journal of Organic Chemistry

Year:

1987

Language:

english

File:

PDF, 743 KB

english, 1987

48

Chemical modification of paraherquamide. 1. Unusual reactions and absolute stereochemistry

Blizzard, Timothy A., Marino, Gaye, Mrozik, Helmut, Fisher, Michael H., Hoogsteen, Karst, Springer, James P.

Journal:

Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 870 KB

english, 1989

49

Methyl 6-(phenylsulfinyl)imidazo[1,2-a]pyridine-2-carbamate, a potent, new anthelmintic

Bochis, Richard J., Dybas, Richard A., Eskola, Philip, Kulsa, Peter, Linn, Bruce O., Lusi, Aino, Meitzner, Eric P., Milkowski, John, Mrozik, Helmut

Journal:

Journal of Medicinal Chemistry

Year:

1978

Language:

english

File:

PDF, 407 KB

english, 1978

50

Syntheses and biological activities of 13-substituted avermectin aglycons

Mrozik, Helmut, Linn, Bruce O., Eskola, Philip, Lusi, Aino, Matzuk, Alexander, Preiser, Franz A., Ostlind, Dan A., Schaeffer, James M., Fisher, Michael H.

Journal:

Journal of Medicinal Chemistry

Year:

1989

Language:

english

File:

PDF, 1.03 MB

english, 1989

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