Abstract: A stereocontrolled glycosidation with thiophenyl 4-(N-allyloxycarbonyl)-epi-methylamino-4-deoxyoleandrose and 5-O-allyloxycarbonyl avermectin B.sub.1 monosaccharide using N-iodosuccinimide produces exclusively the .alpha.-anomer of a precursor of 4"-epi-methylamino-4"-deoxyavermectin B.sub.1 in 90% yield. Deprotection and crystallization as the benzoic acid salt yields 4"-epi-methylamino-4"-deoxyavermectin B.sub.1 (emamectin benzoate), a potent insecticide.
Abstract: Certain aminoalkyl thioethers represented by the formula ##STR1## their acid addition salts and quaternary ammonium salts are described. The compounds have useful antimicrobial properties.
Abstract: A process of synthesizing a compound of the formula 1: ##STR1## is disclosed, which comprises reacting a compound of the formula 2: ##STR2## with diphenylphosphine in the presence of an amine base and a nickel catalyst to produce a compound of formula 1.
Type:
Grant
Filed:
June 1, 1994
Date of Patent:
March 21, 1995
Assignee:
Merck & Co., Inc.
Inventors:
Dongwei Cai, Joseph F. Payack, Thomas R. Verhoeven
Abstract: A device is provided for controlled dispensing of a variable measured quantity of fluid from a container. The device has a dosage cup chamber adapted to hold a measured quantity of fluid when the container is inverted and righted. This fluid is then dispensed from the chamber through a valved conduit.
Abstract: Packaging vial for a liquid product in particular medicinal or cosmetic, manufacturing process and device for use of this vial. The vial includes a flexible casing (1), coupled to a rigid support (2), the casing (1) consisting of a pocket (10) with thin and distortable walls, containing the product and free from air, as well as a tubular nozzle (11) for dispensing the product, to which is coupled the pocket (10), the vial including furthermore a pump for dosing and delivering the product, said pump containing a fixed body inserted into the nozzle (11) and a moveable actuating member which is located inside the casing, but Which can be moved from the outside of the latter thanks to the distortable character of its wall which, proximate the actuating member, has the shape of a bellows.
Abstract: Phenoxyphenylacetic acids and derivatives of the general structural formula I ##STR1## have endothelin antagonist activity and are therefore useful in treating cardiovascular disorders, such as hypertension, pulmonary hypertension, postischemic renal failure, vasospasm, cerebral and cardiac ischemia, myocardial infarction, endotoxic shock, inflammatory diseases including Raynaud's disease and asthma.
Type:
Grant
Filed:
July 20, 1993
Date of Patent:
February 21, 1995
Assignee:
Merck & Co., Inc.
Inventors:
Prasun K. Chakravarty, Elizabeth M. Naylor, James R. Tata, Thomas F. Walsh
Abstract: The present invention is directed to water-soluble derivatives of antibiotic lipopeptides. The derivatives have good solubility properties in aqueous medium, rendering them more useful as therapeutic agents.
Type:
Grant
Filed:
March 19, 1990
Date of Patent:
January 31, 1995
Assignee:
Merck & Co. Inc.
Inventors:
Milton L. Hammond, Robert E. Schwartz, James M. Balkovec
Abstract: There are disclosed lipopeptide derviatives of the general formula: ##STR1## where the substituents are defined herein which have antifungal and antiprotozoal activity. There are also disclosed pharmaceutical compositions containing these compounds.
Type:
Grant
Filed:
August 27, 1991
Date of Patent:
January 31, 1995
Assignee:
Merck & Co. Inc.
Inventors:
Milton L. Hammond, Robert E. Schwartz, James M. Balkovec
Abstract: Antifungal and antiparasital lipopeptide compounds stable in aqueous media are described. Stability in aqueous media render lipopeptides more useful for compositions for therapeutic applications.
Abstract: Spirocycles of the general structural formulae: ##STR1## wherein: X is O, CH.sub.2 or SO.sub.m ;R.sup.1 is AlkylSO.sub.2 NH--, AlkylO--, AlkylSO.sub.2 --, AlkylCONH--, or NO.sub.2 --;R.sup.2 is --H, --OAlkyl, or --Alkyl;R.sup.3 is --NHCOCH.sub.2 SO.sub.m Phenyl, --NHCOCH.sub.2 SO.sub.m Alkyl,--NHCOC(CH.sub.3).sub.2 OH, or NHSO.sub.2 Alkyl;R.sup.4 and R.sup.5 are --H, or --Alkyl;R.sup.6 is ##STR2## R.sup.7 is --H, --CN, --NHSO.sub.2 Alkyl, --Br, --OAlkyl, --NH.sub.2, --NO.sub.2, --NHCOAlkyl, or NHCONHAlkyl;R.sub.8 is --H, --OH, --CN, --OAlkyl, --CONHAlkyl, --NHSO.sub.2 Alkyl, --NHCOAlkyl, --SO.sub.m Alkyl, or --CO.sub.2 Alkyl;and m is 0-2; or a pharmaceutically acceptable salt, hydrate or crystal form thereof; which are Class III antiarrhythmic agents.
Type:
Grant
Filed:
June 30, 1993
Date of Patent:
January 17, 1995
Assignee:
Merck & Co., Inc.
Inventors:
John J. Baldwin, David A. Claremon, Jason M. Elliott
Abstract: There is disclosed a novel form of avermectin compounds wherein the avermectin compounds are crystallized as alcohol solvates to greatly enhance stability of the avermectin drug during long-term storage. The avermectin compounds have utility as highly potent antiparasitic, insecticidal, and anthelmintic agents and compositions for that use are also disclosed.
Abstract: Aza cyclohexapeptide compounds are disclosed with a nitrogen attached to the cyclohexapeptide ring at the 5-carbon of the 4-hydroxyornithine component. Such compounds are represented by the formula: ##STR1## The compounds are disclosed as having antifungal, antiprotozoal and anti-Pneumocystis carinii activity.
Type:
Grant
Filed:
March 16, 1993
Date of Patent:
January 3, 1995
Assignee:
Merck & Co., Inc.
Inventors:
James M. Balkovec, Regina M. Black, Frances A. Bouffard
Abstract: A laser drilling process capable of producing a plurality of holes in a pharmaceutical dosage form, at high speed, is presented. The process utilizes a digital laser marking system (DigiMark.TM. variable marking system) to produce an unlimited number of holes through the surface or coating of a dosage form, at rates up to 100,000 units or more per hour.
Abstract: Phenoxyphenylacetic acids and derivatives of general structural formula I ##STR1## have endothelin antagonist activity and are therefore useful in treating cardiovascular disorders, such as hypertension, congestive heart failure, postischemic renal failure, vasospasm, cerebral and cardiac ischemia, myocardial infarction, inflammatory diseases, Raynaud's disease, and endotoxic shock, and asthma.
Type:
Grant
Filed:
March 19, 1993
Date of Patent:
December 20, 1994
Assignee:
Merck & Co., Inc.
Inventors:
Daljit S. Dhanoa, Kenneth J. Fitch, Daniel F. Veber, Thomas F. Walsh, David L. Williams, Jr.