摘要:
A process for preparing (3,4,5,6)-4-benzyloxymethyl-hexahydro-5hydroxy-2H-cyclopenta(b)furan-2-one, a known intermediate for producing prostaglandins from 5,6-dimethylbicyclo(2.2.1)hept-5en-2-endo-3-endodicarboxylic acid anhydride and intermediates in this process.
摘要:
The present invention discloses tricyclic compounds having a gem-bis(hydroxymethyl) functional group. Compounds within the formulae of the present invention include those components having unsaturation in the ring structure and those in which the unsaturation has been converted a halogen or phosphite functionality.
摘要:
Cyclopentene derivatives (I) ##STR1## where R.sup.1 is isopropyl or isopropenyl, R.sup.2 is alkyl of 1 to 3 carbon atoms, X is --CHO, a dialkyl acetal or 1,2- or 1,3-alkylene acetal thereof where the acetal radical is of 2 to 6 carbon atoms, --CH.sub.2 OH or --CH.sub.2 OCOR.sup.3 where R.sup.3 is hydrogen or alkyl or alkenyl of up to 3 carbon atoms. The manufacture of I from the corresponding halomethyl cyclopentenes and aldehydes R.sup.2 --CH(CH.sub.3)--CHO in the presence of a base and a quaternary ammonium salt, followed if desired by acetalization or conversion of the --CHO group to the --CH.sub.2 OH or --CH.sub.2 O--CO--R.sup.3 groups. The compounds are useful as fragrance materials.
摘要:
The invention relates to a process for preparing a compound of the formula (I), in which R is H or C1-C6 alkyl, by reaction of at least one compound of the formula (II) in which R has the same definition as in the formula (I) and in which R1 is H, C1-C12 alkyl or C3-C12 cycloalkyl, with a compound of the formula (III) in which R2 is H or C(O)R3, in which R3 is H or C1-C12 alkyl, in the presence of at least one enzyme suitable for transesterification.
摘要:
There are disclosed a bicyclo[3.3.0]octene derivatives having the following formula: ##STR1## wherein R.sup.1 : a straight, branched or cyclic alkyl group or alkenyl group each having 5 to 10 carbon atoms;R.sup.2 and R.sup.3 : each represent a hydrogen atom or a protective group of a hydroxy group; andR.sup.4 : --CH.dbd.CH--(CH.sub.2).sub.2 --COOR.sup.5 or --CH.sub.2 R.sup.6 ; whereR.sup.5 : a hydrogen atom or an alkyl group; andR.sup.6 : a hydroxy group, an acetyloxy group or a butenyl group,and process for producing the same. These compounds and the process for producing them are available for producing a 9(0)-methano-.DELTA..sup.6 (9.alpha.)-PGI.sub.1.
摘要:
Prostanoic acid derivatives represented by the general formula: ##STR1## in which X represents hydrogen or hydroxy, X.sub.1 represents hydrogen or X and X.sub.1, when they are taken together with the carbon atom to which they are attached, represent a carbonyl group and Z represents hydrogen or hydroxy and pharmaceutically acceptable alkali metal salts thereof.They can be used as bronchodilators and/or inhibitors of blood-platelet aggregation.
摘要:
The invention relates to novel aldehydes and nitriles from isophorone with general formula (I) having a specific fragrance (Formula I) (I), as well as to the use of said compounds in perfumery.
摘要:
There are disclosed bicyclo[3.3.0]octene derivatives having the following formula: ##STR1## wherein R.sup.1 is a straight, branched or cyclic alkyl group or alkenyl group each having 5 to 10 carbon atoms; andR.sup.2 and R.sup.3 are each separately a hydrogen atom or a protective group of a hydroxy group,and process for producing the same. These compounds and the process for producing them are available for producing a 9(0)-methano-.DELTA.6(9.alpha.)-PGI.sub.1.
摘要:
An azulene derivative capable of exerting a hypocholesterolemic effect on a mammal which is represented by the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 alkyl groups and C.sub.2 -C.sub.12 alkenyl groups.