Abstract: Solutions of choline base, (2-hydroxyethyl)trimethylammonium hydroxide, in water and/or lower alkanols may be stabilized by the addition of a stabilizing concentration of formaldehyde or paraformaldehyde. The stabilized solutions may be used as cleaning solutions, etchants for semiconductors and metal layers, and developers and strippers for positive working photoresists, and for other uses where a metal ion-free base is desired.
Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently --H or lower alkoxy;R.sub.3 and R.sub.4 are each independently lower alkyl; andR.sub.5 and R.sub.6 are each --OCH.sub.3, or together form --OCH.sub.2 O-- or --OCH.sub.2 CH.sub.2 O--and pharmaceutically acceptable acid addition salts thereof are calcium channel blockers useful for treating cardiovascular disorders including angina, hypertension and congestive heart failure.
Type:
Grant
Filed:
June 27, 1986
Date of Patent:
July 21, 1987
Assignee:
Syntex (U.S.A.) Inc.
Inventors:
Robin Clark, Joseph M. Muchowski, Fang-Ting Chiu, John O. Gardner, Jacob Berger
Abstract: A compound having the formula ##STR1## where Ar=naphthyl, biphenyl, or quinolinyl;X=oxygen or NH;Y=2 to 8;R.sub.1 =phenyl, substituted phenyl, hydrogen, lower alkyl; andR.sub.2 is the same or different from R.sub.3 and is alkyl, cycloalkyl, phenyl, substituted phenyl, thiazolyl; andthe pharmaceutically acceptable salts thereof.Compounds of this general formula are useful as anti-inflammatories, and as anti-psoriatic agents.
Abstract: Compounds useful in treating cardiovascular disorders such as thrombosis, hypertension, and atherosclerosis are compounds depicted in formulas (1), (2), and (3): ##STR1## wherein: Y is exo-(lower alkyl) or endo-(lower alkyl);n is 2 or 3;R.sub.1 is CH.sub.2 OH, CHO, CO.sub.2 R or CO.sub.2 H;R.sub.2 is hydrogen or methyl; andR.sub.3 is linear or branched alkyl having 5-10 carbon atoms, ##STR2## or --(CH.sub.2).sub.m -phenyl optionally substituted with lower alkyl, lower alkoxy, trifluoromethyl, or halogen,in whicha is 0, 1 or 2;b is 3-7;m is 1 or 2; andR is ##STR3## wherein X is ##STR4## in which each R.sub.4 is independently hydrogen or lower alkyl having 1-6 carbon atoms, and the pharmaceutically acceptable, non-toxic salts and esters thereof.
Abstract: A fluid handling system is described wherein a small fluid volume is placed on a reversibly-deformable support, which can be deformed to form a cavity. As the fluid clings to the surface of the support, it is physically agitated and mixed as the support is deformed. The deformable support can be utilized to provide fluid containers of varying sizes, to accommodate different fluid volumes and as a transport mechanism to move fluid from one location to another.
Abstract: An improvement is disclosed in a method for measuring intensity fluctuations of an electromagnetic signal of wavelength between about 350 nm to 1200 nm from a liquid medium. The improvement comprises autocorrelating the intensity of the signal over a non-zero interval the duration of which is short compared to the mean duration of the fluctuations. The method has particular applciations in the diagnostic area, particularly where such fluctuations are a result of the presence of fluroscent particles in a liquid medium. Methods are also disclosed for determining an analyte in a sample suspected of containing such analyte.
Abstract: Compositions containing dihydropyridine derivatives which are useful for treating congestive heart failure, hypertension, or angina have the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, wherein n is an integer from 0 to 8;Y is --O--, --NH--, --NR.sub.2 --, --S--, --S(O)--, --S(O).sub.2 --, or a bond;R.sub.1 and R.sub.2 are each independently A.sub.1, A.sub.2, A.sub.3 or A.sub.4 whereA.sub.1 is --(CH.sub.2).sub.m (CHOH).sub.p CH.sub.2 OH;A.sub.2 is --(CH.sub.2).sub.q CH.sub.(3-r) [(CH.sub.2).sub.s OH].sub.r ;A.sub.3 is --(CH.sub.2).sub.q CH.sub.(3-r) [(CH.sub.2).sub.p COOR.sub.3 ].sub.r ; andA.sub.4 is --(CH.sub.2).sub.m COOR.sub.3 ; wherem is an integer from 1 to 8;p is an integer from 0 to 4;q is an integer from 0 to 8;r is 2 or 3;s is an integer from 1 to 4; andR.sub.3 is H or alkyl of 1 to 18 carbon atoms;R.sub.4 is --NO.sub.2, --CF.sub.3, or halo; andR.sub.5 is lower alkyl or --CH.sub.2 CH.sub.2 OCH.sub.3.
Abstract: This invention relates to compounds of the formula ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein the various substituents are defined herein. These compounds are cyclic AMP phosphodiesterase inhibitors useful as antithrombotic and inotropic agents in mammals.
Abstract: Long chain unsaturated hydrocarbon derivatives, having from 13 to 21 carbon atoms, which are substituted at the 1-position by a phenoxy, phenylthio or a phenyl that bear a carboxylic acid group at the ortho, meta or para positions, and up to 4 carbon-carbon triple bonds, methods of preparing them, and pharmaceutical preparations containing them. These compounds are useful as lipoxygenase inhibitors, and therefore as antiinflammatory agents.
Abstract: Background interference which disrupts the measurement of an analyte in enzyme immunoassays with samples is substantially diminished. In accordance with one embodiment of the invention, the serum sample is treated with a sufficient amount of a peracid compound, either organic or inorganic, for a time and under conditions sufficient to reduce or eliminate background interference contributed by serum components other than analyte. The peracid compound is readily quenched, without adversely affecting the assay compositions. In another embodiment of the invention a liqand for the interfering component of the sample, such as unconjugated enzyme which is inactive but antigenic, is mixed with the sample to be analyzed. The presence of the liqand substantially reduces or eliminates background interference from components of the sample other than analyte.
Type:
Grant
Filed:
February 22, 1984
Date of Patent:
May 26, 1987
Assignee:
Syntex (U.S.A.) Inc.
Inventors:
Richard Armenta, Ian Gibbons, John Olson
Abstract: Synthetic nonpeptide and decapeptide LHRH antagonist analogs have a novel guanido-substituted, amidine, tertiary or quaternary amine water-soluble aminoacyl residue at position 6.
Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 and each independently --H or lower alkoxy; R.sub.3 and R.sub.4 are each independently lower alkyl; and R.sub.5 and R.sub.6 are each --OCH.sub.3, or together form --OCH.sub.2 O-- or --OCH.sub.2 CH.sub.2 O--, and pharmaceutically acceptable acid addition salts thereof are prepared by cyclizing, deoxygenating, coupling, or hydrogenating the intermediates disclosed herein.
Type:
Grant
Filed:
September 22, 1986
Date of Patent:
May 19, 1987
Assignee:
Syntex (U.S.A.) Inc.
Inventors:
Robin Clark, Joseph M. Muchowski, Fang-Ting Chiu, John O. Gardner, Jacob Berger
Abstract: 2-Oxy-4H-3,1-benzoxazin-4-ones represented by the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein: a is an integer of 0-4;A is a bond, or alkylene having one to eight carbon atoms;R is hydrogen, phenyl, imidazolyl or cycloalkyl having three to six carbon atoms, wherein the phenyl, imidazolyl or cycloalkyl ring is optionally substituted with 1-3 substituents independently selected from the group consisting of lower alkyl having one to four carbon atoms, lower alkoxy having one to four carbon atoms, --N(R.sup.1).sub.2, --NO.sub.2, halo or lower alkylthio having one to four carbon atoms, and,each R' is independently selected from the group consisting of lower alkyl having one to six atoms, lower alkenyl having two to six carbon atoms, lower alkoxy having one to six carbon atoms,lower alkylthio or halo-lower alkyl having one to four carbon atoms, halo, --NO.sub.2, --N(R.sup.1).sub.2, ##STR2## --NR.sup.1 COR.sup.2, and ##STR3## in which each R.sup.
Type:
Grant
Filed:
June 25, 1985
Date of Patent:
May 12, 1987
Assignee:
Syntex (U.S.A.) Inc.
Inventors:
Alexander Krantz, Robin Spencer, Tim Tam, Teng J. Liak
Abstract: Compounds according to the formula ##STR1## an optical isomer thereof, or a pharmaceutically acceptable acid addition salt thereof wherein:n is an integer of 1 to 6;R.sub.1 is hydrogen or alkyl of 1 to 4 carbons;R.sub.2 is hydrogen or R.sub.1 and R.sub.2 are combined to form an oxo group;R.sub.3 is hydrogen, alkyl of 1 to 6 carbons, phenyl, benzyl, hydroxy lower alkyl or an aliphatic acylate thereof of 1 to 6 carbon atoms or an aryl acylate thereof of 7 to 12 carbon atoms, carbamoyl alkyl, carboxyalkyl, alkoxycarbonylalkyl of an .alpha.-amino acid side chain;R.sub.4 is hydrogen, alkyl of 1 to 6 carbons, benzyl, or hydroxy lower alkyl;Y is hydrogen, alkyl of 1 to 4 carbon atoms, halo or lower alkoxy;A is NR.sub.5 R.sub.6 wherein R.sub.5 and R.sub.
Type:
Grant
Filed:
June 11, 1985
Date of Patent:
May 5, 1987
Assignee:
Syntex (U.S.A.) Inc.
Inventors:
Gordon H. Jones, Michael C. Venuti, Robert Alvarez, John J. Bruno, Jurg R. Pfister