摘要:
Novel nitrone substituted 4-aryl dihydropyridines of the formula: ##STR1## are described along with a process for their preparation. The compounds exhibit calcium channel blocker and antimetastatic acitivity.
摘要:
Novel cyclic hydroxamic acids of the general formula: ##STR1## wherein ring A is 5- or 6-membered; R.sup.1, R.sup.2 and R.sup.3 each, ipendently, is hydrogen, C1-24 alkyl, C2-24 alkenyl or a group of the formula: ##STR2## wherein R.sup.4, R.sup.5, R.sup.7 and R.sup.8 each, independently is hydrogen,C1-4 alkyl, C1-4 alkoxy, trifluoromethyl, halogen or nitro; l is 1-3; m is 1-3; n is 1-3; k is 1-3;R.sup.6 and R.sup.9 each, independently is C1-24 alkylene or C2-24 alkenylene;With the proviso that, more than one of R.sup.1, R.sup.2 and R.sup.3 are not hydrogen at the same time; and the pharmaceutically acceptable salts thereof possesses an inhibitory activity against 12-lipoxygenase, and therefore, may be useful for treating and/or preventing inflammation, immune diseases, psoriasis, arteriosclerosis and/or ischaemic cardiovascular diseases and also for suppressing metastasis of cancer.
摘要:
Novel aryl aliphatic acids or derivatives thereof of the general formulaR--(C.sub.x --C.sub.y)--(C.sub.m H.sub.2m)--G--C(R.sup.1).sub.2 --Ar--(C.sub.n H.sub.2n)--COOR.sup.2are described which exhibit inhibiting activity against 12-lipoxygenase. The compounds are characterized by having a low level of toxicity. Also included are salts and esters of the aliphatic acids.
摘要:
A process for the preparation of R.alpha.-cyclopentenoids and then R.alpha., R.omega.-cyclopentanoids is described. The process involves the reaction of a compound of the formula ##STR1## where X is halo, particularly Br or I and P is a protecting group with an alkylborane to produce the R.alpha.-cyclopentenone. The R.alpha.-cyclopentenone is reacted with a R.omega. cuprate to produce the R.alpha., R.omega.-cyclopentenoid. The process is used for the preparation of prostaglandins which are known pharmaceutically active compounds.
摘要:
The present invention provides A.sub.3 selective agonists, particularly, adenine compounds having selected substituents at the 2, 6, and 9 positions, and related substituted compounds, particularly those containing substituents on the benzyl and/or uronamide groups, as well as pharmaceutical compositions containing such compounds. The present invention also provides a method of selectively activating an A.sub.3 adenosine receptor in a mammal, which method comprises acutely or chronically administering to a mammal in need of selective activation of its A.sub.3 adenosine receptor a therapeutically or prophylactically effective amount of a compound which binds with the A.sub.3 receptor so as to stimulate an A.sub.3 receptor-dependent response.
摘要:
Cyclopentanoids (I) of the formula: ##STR1## including stereoisomers are described along with a process for the preparation of I. In particular the preparation of prostanoids of the formula: ##STR2## wherein R.sub.1 is a alkyl group containing 1 to 8 carbon atoms and R.sub.2 CO.sub.2 R.sub.3 is an alkenyl ester group, R.sub.2 contains 2 to 6 carbon atoms and R.sub.3 is a lower alkyl group containing 1 to 6 carbon atoms is described. A particular prostaglandin prepared by the process is PGE.sub.2. The prostanoids have been demonstrated to have pharmacological activity in animals and humans. Novel intermediates of (I) are also described.
摘要:
A mechanical drive mechanism of the endless belt and pulley type having an improved belt tensioning arrangement. The shaft of the machine being driven (or that of the driving member itself) is eccentrically journaled with respect to its cylindrical bearing hub and a rigid arm having a first bore therethrough is disposed with the hub of the machine centered in that first bore. Located at the opposed end of the rigid arm is a parallel bore in which the other drive or driven shaft is journaled. Because of the eccentricity between the first shaft and its hub, as the arm is rotated about the hub as a center, the distance between the centers of the driving and driven shafts is increased or decreased, depending upon the direction of rotation of the rigid arm. As such, the tension of the endless belt coupling the drive and driven pulleys can be varied. The construction of the belt and pulley combination lends itself to being completely enclosed in a protective shroud which need not be removed to make the tensioning adjustment.