摘要:
The present invention is directed to farnesyl pyrophosphate analogs which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention, and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
摘要:
The present invention relates to novel optically active isoxazole derivatives represented by general formula: ##STR1## which are useful as intermediates for synthesis of prostaglandin and a process for producing the same as well as novel aldehyde compounds represented by general formula: ##STR2## which are intermediates for preparing the compounds [XI] described above and a process for preparation thereof. In the compounds shown by these formulae, R.sup.1 represents an alkyl group or a cycloalkyl group which may have an alkoxy group or a group shown by -Ra-A-B (wherein Ra is an alkyl group; A is a hetero atom or an single bond; and B is an aromatic or hetero ring which may have a substituent(s)); and R.sup.2 and R.sup.3, which may be the same or different, each represents an aralkyl group, a silyl group or an acyl group.
摘要:
A process for the preparation of an aldehyde which comprises reacting the corresponding alkanol with a solubilized stable free radical nitroxide having the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an alkyl, aryl or heteroatom substituted alkyl group having 1 to about 15 carbon atoms and each of R.sub.5 and R.sub.6 is alkyl, hydrogen, aryl or a substituted heteroatom, an alkali metal nitrosodisulfonate, a non-basic polar solvent and an oxidant, for about eight hours or less at a temperature in the range of from about 10.degree. C. to about 20.degree. C. and thereafter separating out the aldehyde.
摘要:
A process for the preparation of an aldehyde which comprises reacting the corresponding alkanol with a solubilized stable free radical nitroxide having the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an alkyl, aryl or heteroatom substituted alkyl group having 1 to about 15 carbon atoms and each of R.sub.5 and R.sub.6 is alkyl, hydrogen, aryl or a substituted heteroatom, nitric acid and a non-basic polar solvent, in the presence of an oxidant, for about eight hours or less at a temperature in the range of from about -10.degree. C. to about 25.degree. C., and thereafter separating out the aldehyde.
摘要:
7-Oxabicycloheptane substituted prostaglandin analogs useful in treating thrombotic and vasospastic disease have the structural formula ##STR1## wherein m is 1, 2 or 3; n is 1, 2, 3 or 4; Z is --(CH.sub.2).sub.2 --, --CH.dbd.CH-- or ##STR2## wherein Y is O, a single bond or vinyl, with the proviso that when n is O, if Z is ##STR3## then Y cannot be O, and when Z is --CH.dbd.CH--, n is 1, 2, 3 or 4; and when Y=vinyl, n=; R is CO.sub.2 H, CO.sub.2 lower alkyl, CH.sub.2 OH, CO.sub.2 alkali metal, CONHSOR.sup.3 m CONHR.sup.3a or --CH.sub.2 -5-tetrazolyl, X is O, S or NH; and where R.sup.1, R.sup.2, R.sup.3 and R.sup.3a are as defined herein.
摘要:
Disclosed are tetraphenyl porphyrins which are beta-substituted by fluoro or chloro and/or bear electronegative substituents on the phenyl including one or two water solubilizing substituents. The new porphorins are particularly suitable as catalysts in a variety of oxidative reactions and methods.
摘要:
Disclosed are tetraphenyl porphyrins which are beta-substituted by fluoro or chloro and/or bear electronegative substituents on the phenyl including one or two water solubilizing substituents. The new porphorins are particularly suitable as catalysts in a variety of oxidative reactions and methods.
摘要:
An improved process for preparing ketones by contacting a secondary aliphatic alcohol in the vapor phase with a trimetallic catalyst containing molybdenum, rhenium and a Group VIII noble metal.
摘要:
The present invention pertains to a process for making a E,Z-11-tetradecen-1-al containing from 80 to 83 mole percent of the E isomer and from 17 to 20 mole percent of the Z isomer which exhibits pheromone-like activity for the spruce bud worm (choristoneura fumiferana).
摘要:
A method for the total synthesis of cyclosporins, in particular Cyclosporin A, cyclosporins produced in accordance with the method of the invention and novel intermediates, in particular novel [1S, 2R, 3R]- and [1R, 2S, 3S]-1-nitrilo-1-carbonyl-3-methyl-2-oxy-heptanes and -hept-5-enes, employed in the method of the invention.