摘要:
The present invention relates to an optically active alcohol and the analogue thereof, i.e., (+)-cis-4-cumyloxy-2-cyclopenten-1-ol (1) and (-)-cis-1-acyloxy-4-cumyloxy-2-cyclopentene (2), which are useful as intermediates for biologically active compounds such as prostaglandins, and processes for preparing them. The invention also relates to the use of the optically active alcohol and the analogue thereof for the preparation of (-)-oxabicyclo[3.3.0]oct-6-en-3-one.
摘要:
Substantially pure preparations of phosphosesquiterpenes are described. The compounds inhibit farnesyl-protein transferase activity and are useful for the treatment of cancer. Methods for inhibiting farnesyl-protein transferase activity are also described.
摘要:
The invention relates to novel substituted β,η-anellated lactones, to methods for producing said β,η-anellated lactones, and to their use for preventing and/or treating diseases caused by the hyper- or hypofunction of the glutamatergic system, especially cerebral ischaemia, cranial/cerebral trauma, pain or CNS-mediated cramps.
摘要:
Fluorinated prostaglandin derivatives represented by general formula (1) or salts thereof; and medicines containing the same as the active ingredient, particularly ones to be used for preventing or treating eye diseases. In said formula A represents vinylene, ethylene, ethynylene, etc.; R1 represents aryloxyalkyl, alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl, etc.; R?2 and R3¿ represent each hydrogen, acyl, etc.; Z represents -OR4, -NHCOR5, -NHSO¿2?R?6, -SR7¿ (wherein R?4, R5, R6 and R7¿ represent each hydrogen, alkyl, etc.); and the combination of the solid line with the broken line represents a single bond, a cis double bond or a trans double bond. The medicines are excellent as a medicine for eye diseases with high pharmacological effects and low side effects.
摘要:
A difluoroprostacyclin of the following formula (IV): wherein A is an ethylene group, a vinylene group or an ethynylene group, R is a substituted or unsubstituted C 1-10 alkyl group, a substituted or unsubstituted C 2-10 alkenyl group, or a substituted or unsubstituted aralkyl group, Q is a substituted or unsubstituted C 1-10 alkyl group, a substituted or unsubstituted C 2-10 alkenyl group, a substituted or unsubstituted C 2-10 alkynyl group, a substituted or unsubstituted C 3-8 cycloalkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group and each of R 1 and R 3 , which are independent of each other, is a hydrogen atom or as a protecting group for a hydroxyl group, a triorganosilyl group, an acyl group, an alkyl group, an aralkyl group or a cyclic ether group.
摘要:
Method for preparing 13,14-dihydro-17-phenyl analogues of PGF2α or PGE2 comprising the step of hydrogenating the double bond in an intermediate compound (I) without deoxygenation of the allylic alcohol to give one of the intermediate compounds (II, III) wherein R is hydrogen or one or more halogen, hydroxyl, cyanide, alkyl (preferably 1-4 carbon atoms), hydroxyalkyl, trifluoromethyl or aromatic or heteroaromatic substituents on the aromatic ring R1 and R2 are each hydrogen, alkyl (preferably 1-4 carbon atoms), hydroxyl, halogen or hydroxyalkyl substituents, R3 is O-alkyl or N(alkyl), P is a protecting group.
摘要:
The invention aims at providing a safe technique for remarkably improving the yield of an α,β-unsaturated ketone through introduction of an φ-chain into an aldehyde without being accompanied by the generation of hydrogen in the process for synthesizing a prostaglandin, in particular, one having at least one halogen atom in the 16- or 17-position. The invention process comprises conducting the reaction of an aldehyde with a 2-oxoalkylphosphonate in the presence of a base and a zinc compound.
摘要:
An optically-purified enantiomer of the lactone 4-hydroxy-2-oxabicyclo-[3.3.0]oct-7-en-3-one or an acylate thereof can be obtained by biotransformation. It is a useful synthon in the preparation of an enantiomer of 3-hydroxymethyl-2-hydroxycyclopentene that can be used to prepare carbocyclic nucleosides as a desired enantiomer.
摘要:
Nouveau procédé de préparation de l'ester de 13,14-dihydro-15(R)-17-phényl-18,19,20-trinor-PGF2alpha isopropyle répondant à la formule (I), dans laquelle R représente un groupe alkyle ou phényle ou benzyle C1-7 droit, ramifié ou cyclique et saturé ou insaturé. Le procédé consiste à réduire le groupe oxo sur la chaîne latérale du composé répondant à la formule (VII); à transformer par hydrogénation le composé ainsi obtenu, c'est-à-dire le 3,3a,4,5,6,6a-hexahydro-2-oxo-4-[5'-phényl-3'(R)-hydroxypent-1'-ényl]-5-(4'-phényl-benzoxyloxy)-2H-cyclopenta[b]furane répondant à la formule (VI), de manière à obtenir le 3,3a,4,5,6,6a-hexahydro-2-oxo-4-[5'-phényl-3'(R)-hydroxy-1'-pentyl]-5-(4'-phénylbenzoyloxy)-2H-cyclopenta[b]furane répondant à la formule (V); à reduire le composé de la formule (V) en 3,3a,4,5,6,6a-hexahydro-2-hydroxy-4-[5'-phényl-3'(R)-hydroxy-1'-pentyl]-5-(4'-phénylbenzoyloxy)-2H-cyclopenta[b]furane répondant à la formule (IV); à enlever le groupe protecteur du composé de la formule (IV) de manière à obtenir un 3,3a,4,5,6,6a-hexahydro-2,5-dihydroxy-4-[5'-phényl-3'(R)-hydroxy-1'-pentyl]-2H-cyclopenta[b]furane répondant à la formule (III); puis à transformer le composé ainsi obtenu répondant à la formule (III) en 13,14-dihydro-15(R)-17-phényl-18,19,20-trinor-PGF2alpha répondant à la formule (II), à l'aide d'un halogénure de 4-carboxybutyl-triphénylphosphonium; et enfin à transformer le composé de la formule (II) à l'aide d'un composé répondant à la formule générale RX-, dans laquelle R a la même notation que ci-dessus, et X représente sulfate d'halogène, mésyle, tosyle ou tout groupe approprié, de manière à obtenir des esters de 13,14-dihydro-15(R)-17-phényl-18,19,20-trinor-PGF2alpha répondant à la formule générale (I).