Abstract: Disclosed is a novel class of substituted and unsubstituted benzyl formimidates, represented in a convenient acid addition salt form (I); and the use of these reagents in the preparation of the antibiotic N-formimidoyl thienamycin (II): ##STR1## wherein A is a non-critical anion such as chloro, bromo, hydrogen sulfate or an alkyl aralkyl or aryl sulfonate, wherein the alkyl moiety has 1-6 carbon atoms and the aryl moiety is phenyl, for example; n is 0, 1 or 2; and X is independently selected from nitro, halo (chloro, bromo, fluoro, and iodo), loweralkyl having from one to six carbon atoms, phenyl, and phenylalkyl having from 7-12 carbon atoms, and --COOR, wherein R is hydrogen or loweralkyl having from one to six carbon atoms.
Type:
Grant
Filed:
March 19, 1981
Date of Patent:
February 22, 1983
Assignee:
Merck & Co., Inc.
Inventors:
George G. Hazen, Ralph P. Volante, Kenneth E. Wilson
Abstract: There is disclosed a process for preparing a cyclic hexapeptide somatostatin analog, specifically cyclo (D-Trp-Lys-Val-Phe-N-Me-Ala-Tyr). The cyclic hexapeptide is synthesized in large quantities in a solution synthesis procedure. However, because of the unexpectedly rapid cyclization rate of this compound, conditions have been developed such that a much more concentrated solution, and thus smaller volumes of the reaction medium, may be employed than would be expected.
Abstract: The present application discloses certain 2-substituted propoxy-3-cyano-5-hydroxypyridines. The compounds have pharmaceutical activity e.g. as antihypertensives.
Type:
Grant
Filed:
February 10, 1981
Date of Patent:
February 15, 1983
Assignee:
Merck & Co., Inc.
Inventors:
John J. Baldwin, Gerald S. Ponticello, Stanley Vickers, Alfred Steuerwald
Abstract: A composition containing yogurt is prepared which upon manual shaking produces a drink containing entrapped air having a milk shake appearance which is retained for about 30 minutes after shaking. The composition contains yogurt and milk in a yogurt: milk ratio of 80:20 to 53:47, a soya protein whipping agent, xanthan gum and/or CMC as a stabilizer and optionally sugar.
Abstract: Herpes virus subunit antigens suitable for vaccine use are prepared by (1) treating virus-infected cells with a surfactant and varying concentrations of salt to extract and solubilize viral-directed glycoproteins, (2) fractionating the solubilized material by chromatographic procedures to enrich the viral-directed glycoproteins and to remove unwanted proteins and nucleic acids, and (3) optionally treating the subunit antigens with deoxyribonuclease and formaldehyde to assure safety.
Abstract: Disclosed are S-oxides of 6-, 1- and 2-substituted-1-carbadethiapen-2-em-3-carboxylic acids having the structure: ##STR1## wherein: n is 1 or 2; and R.sup.1, R.sup.6, R.sup.7 and R.sup.8 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
Abstract: A novel blend of two components: one a blend of algin and tamarind; and the other, a polycationic electroconductive polymer is disclosed, which is used as a paper coating composition. The paper coated above improvement in film-forming, reduction in air porosity, and an increase in oil and solvent holdout.
Abstract: Disclosed are 3-substituted-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylic acids (I): ##STR1## wherein R is, inter alia, acyl, alkyl, and aralkyl. Such compounds and their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
Type:
Grant
Filed:
August 8, 1980
Date of Patent:
January 18, 1983
Assignee:
Merck & Co., Inc.
Inventors:
Burton G. Christensen, Ronald W. Ratcliffe
Abstract: The invention concerns novel 2-aryl-1,2-benzisothiazolinone-1,1-dioxide compounds; methods for their preparation; pharmaceutical compositions containing them as an active ingredient; and methods of selectively inhibiting proteases, especially elastase, and of treating emphysema, rheumatoid arthritis, and various inflammatory diseases, for example, bronchial inflammation.
Type:
Grant
Filed:
February 2, 1981
Date of Patent:
January 18, 1983
Assignee:
Merck & Co., Inc.
Inventors:
Howard Jones, Robert L. Clark, Morris Zimmerman
Abstract: Immunologically active compounds of the formula: ##STR1## wherein: R.sub.1 is C.sub.1-7 alkyl; substituted C.sub.1-7 alkyl; phenyl; or substituted phenyl;R.sub.2 is hydrogen; C.sub.1-7 alkyl; substituted C.sub.1-7 alkyl; phenyl; substituted phenyl; phenyl C.sub.1-4 alkyl; or substituted phenyl C.sub.1-4 alkyl;R.sub.3 and R.sub.4 may be the same or different and are each independently hydrogen, provided that R.sub.3 and R.sub.4 may not both be hydrogen; or ##STR2## where X is --O--; --S--; or ##STR3## R.sub.10 is hydrogen; C.sub.1-30 alkyl; C.sub.2-30 alkenyl; C.sub.1-30 alkoxy; phenyl; C.sub.1-20 alkylsulfonyl; or cholesteryl;R.sub.11, R.sub.12, R.sub.13, R.sub.14, and R.sub.15 may be the same or different and are each independently hydrogen; C.sub.1-20 alkyl; C.sub.1-20 alkylcarbonyloxy; amino; benzyl; C.sub.1-20 alkoxymethyl; C.sub.1-20 alkylamido; or ##STR4## r is 0 or 1; s is 0 or 1; and t is 0 to 20; provided that s may only be 0 when both r and t are greater than 0 or when r is 0 and R.sub.
Type:
Grant
Filed:
April 17, 1980
Date of Patent:
January 11, 1983
Assignee:
Merck & Co., Inc.
Inventors:
Tsung-Ying Shen, Philippe L. Durette, Conrad P. Dorn, Jr., James B. Doherty, Richard T. Dean
Abstract: Antimicrobial compounds of the formulas: ##STR1## where R.sup.1 and R.sup.2 are hydrogen; halo; C.sub.1-4 alkyl; C.sub.1-4 alkoxy; hydroxy; nitro; cyano; or trifluoromethyl;m is 0 or 1; andn is 1 or 2.
Type:
Grant
Filed:
December 22, 1981
Date of Patent:
December 28, 1982
Assignee:
Merck & Co., Inc.
Inventors:
John E. Engelhart, Marshall R. Angeles, Michael J. D'Errico
Abstract: An improved process for the preparation of 4-cyanothiazole from 4-methylthiazole using an ammoxidation catalyst composed of manganese, chromium and molybdenum is disclosed.
Type:
Grant
Filed:
May 20, 1981
Date of Patent:
December 14, 1982
Assignee:
Merck & Co., Inc.
Inventors:
Stuart Bacher, Carlos B. Rosas, John J. Sharkey
Abstract: Novel pyrazinyl -1,2,4-oxadiazoles of the formulas: ##STR1## are useful in treating edema and hypertension, and particularly may be combined with kaliuretic diuretics such as hydrochlorothiazide and indacrinone.
Type:
Grant
Filed:
March 16, 1981
Date of Patent:
December 7, 1982
Assignee:
Merck & Co., Inc.
Inventors:
Mark G. Bock, Edward J. Cragoe, Jr., Robert L. Smith
Abstract: An improved radial flow cell, comprising two or more sets of inlet port-groove-dam devices for improving the efficiency of radial flows and an efficient filtration device consisting of a micropore membrane and a steel screen support of low retention volume, is useful for aseptic and continuous in-line filtration of heterogeneous mixtures containing high concentrations of solids especially those resulting from fermentation processes.
Type:
Grant
Filed:
April 27, 1981
Date of Patent:
December 7, 1982
Assignee:
Merck & Co., Inc.
Inventors:
Robert W. Dobna, B. Allen Mayles, Thomas H. Stoudt
Abstract: 2,4-Disubstituted-1,2,5-thiadiazol-3(2H)-one antimicrobials have broad spectrum antibacterial and antifungal activity. They are found to be especially useful in agriculture to protect plants against diseases such as leaf, stem, and fruit spotting, internal discoloration and decay of fruits and vegetables. These compounds are particularly active against diseases caused by the genera Pseudomonas, Xanthomonas, Erwinia, and Corynebacterium.
Type:
Grant
Filed:
April 21, 1980
Date of Patent:
December 7, 1982
Assignee:
Merck & Co., Inc.
Inventors:
Richard A. Dybas, Bruce E. Witzel, Nathaniel Grier
Abstract: This invention is concerned with a novel process for the preparation of N.sup.6 -alkyl-arprinocid (6-alkyl-amino-9-substituted benzyl purines). Such compounds are active anticoccidial agents. The process involves the preparation of a Schiff base from an acetal of dialkylformamide and reduction with a metal hydride.
Abstract: Disclosed are 2-substituted thio-6-substituted-carbapen-2-em-3-carboxylic acids (I) and their pharmaceutically acceptable salt, ester and amide derivatives which are useful as antibiotics: ##STR1## wherein: R.sup.5 is CN, ##STR2## (R is alkyl or aryl); R.sup.6 is hydrogen, R.sup.5, alkyl, aryl or heteroaryl; andR.sup.7 and R.sup.8 are, inter alia, hydrogen, alkyl, alkenyl, aryl and aralkyl.
Abstract: Highly active and long lasting cyclic hexapeptide analogs of somatostatin are prepared. A single amino acid of D-configuration, functioning as a spacer for the remaining amino acids, replaces seven of the ring amino acids of somatostatin. The amino acid adjacent to this spacer amino acid is methylated on the nitrogen and is of the D-configuration. The two amino acids on either side of this dipeptide are also of D-configuration. The remaining two amino acids, Trp and Lys are either D- or L-. The order of the amino acids is reversed relative to the sequence found in somatostatin. The structures therefore represent a modified form of D-retro peptide analogs. The cyclic hexapeptides are easier to synthesize, have a longer duration of activity, and many have a greater level of activity than somatostatin. The compounds have the properties of inhibiting the release of glucagon, growth hormone and insulin. Certain of the compounds also are capable of inhibiting the release of gastric acid secretions.