Abstract:
A photoacid generator compound has the formula (I): [A-(CHR1)p]k-(L)-(CH2)m—(C(R2)2)nSO3−Z+ (I) wherein A is a substituted or unsubstituted, monocyclic, polycyclic, or fused polycyclic C5 or greater cycloaliphatic group optionally comprising O, S, N, F, or a combination comprising at least one of the foregoing, R1 is H, a single bond, or a substituted or unsubstituted C1-30 alkyl group, wherein when R1 is a single bond, R1 is covalently bonded to a carbon atom of A, each R2 is independently H, F, or C1-4 fluoroalkyl, wherein at least one R2 is not hydrogen, L is a linking group comprising a sulfonate group, a sulfonamide group, or a C1-30 sulfonate or sulfonamide-containing group, Z is an organic or inorganic cation, p is an integer of 0 to 10, k is 1 or 2, m is an integer of 0 or greater, and n is an integer of 1 or greater. A precursor compound to the photoacid generator, a photoresist composition including the photoacid generator, and a substrate coated with the photoresist composition, are also disclosed.
Abstract:
The present invention provides a novel polymorphic form of olopatadine hydrochloride ([(Z)-3-(dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-acetic acid hydrochloride), a selective histamine H1-receptor antagonist that is used for the treatment of ocular symptoms of seasonal allergic conjunctivitis. The present invention also provides novel methods for producing olopatadine on a large scale, and in a manner that is cost effective, provides a low level of impurities and eliminates the need to use the costly and dangerous base, butyllithium, which is used in prior art reactions for making olopatadine. The present invention further provides novel processes for carrying out a large scale production of 3-dimethylaminopropyltriphenylphosphonium bromide and its corresponding hydrobromide salt, which are employed in the production of olopatadine, and pharmaceutically acceptable salts of olopatadine.
Abstract:
The invention discloses a process for the preparation of a compound, having molecular formula C.sub.29 H.sub.50 O.sub.6 and isomeric structural formulae (2R, 3S, 22R, 23R) -2, 3, 22, 23 -tetrahydroxy-24- ethyl-.beta.-homo-7-oxa -5.alpha.- cholestan-6- one and (2R, 3S, 22S, 23S) -2, 3, 22-23-tetrahydroxy-24- ethyl-.beta.-homo-7-oxa-5.alpha.-cholestan -6- one in a ratio 69:31, both of which are members of a new class of steroidal phytohormones.
Abstract translation:本发明公开了一种制备具有分子式C 29 H 50 O 6和异构结构式(2R,3S,22R,23R)-2,3,22,23-四羟基-24-乙基-β- 7-氧杂-5α-胆甾烯-6-酮和(2R,3S,22S,23S)-2,3,22-23-四羟基-24-乙基-β-羟基-7-氧杂-5α-胆甾醇 - 6-比例为69:31,均为新型类固醇植物激素的成员。
Abstract:
The present invention relates to a novel compound namely (2R,3S,24S)-2,3-diacetoxy-22,23-epoxy-24-ethyl-.beta.-homo-7-oxa-5.alpha.-cholestan-6-one and a process for the preparation thereof. The said compound is represented by the structural formula ##STR1## The said compound is a crucial intermediate in the synthesis of honobrassinolide having molecular formula C.sub.29 H.sub.50 O.sub.6.
Abstract:
Novel spiro[dibenz(b,f)thiepin-piperidine]s and methods of preparing same are described. These compounds are useful as analgetics, tranquilizers and anticonvulsants.
Abstract:
The invention discloses novel compounds of the general formula: ##STR1## and salts thereof, in which X stands for oxygen, sulphur, the group >NR.sub.7 or the group --CR.sub.8 R.sub.9 --;R.sub.1, r.sub.2, r.sub.3 and R.sub.4 represent hydrogen, hydroxy, halogen, alkyl (1-6 C), alkoxy (1-6 C), alkylthio (1-6 C) or trifluoromethyl;R.sub.5 and R.sub.6 represent hydrogen, alkyl (1-6 C), aralkyl (7-10 C) or together in combination with the nitrogen atom a heterocyclic five- or six-membered ring;R.sub.7 stands for hydrogen or alkyl (1-4 C);R.sub.8 and R.sub.9 stand for hydrogen or methyl,n is the number 0, 1 or 2 andThe dotted line means an optional C--C bond,With valuable central nervous system (CNS) activities, especially antidepressant activity.
Abstract:
The compounds are benzoxepinones which are central nervous system depressants. A compound disclosed is 8,9,10,11-tetrahydro3-hydroxydibenz(b,d)oxepin-6(7H)one.