摘要:
A diastereoselective process for known antidepressive compounds (I) via reduction of the corresponding alcohol (VII): ##STR1## whereby the product mixture of diastereomers is surprisingly and unexpectedly rich in the content of the trans configuration (II) over the cis configuration (III) as defined in the following formulae: ##STR2## The preferred reaction conditions include use of a borane complex as the reducing agent and an acidic solvent such as trifuloroacetic acid.
摘要:
A diastereoselective process for known antidepressive compounds (I) via reduction of the corresponding alcohol (VII): ##STR1## whereby the product mixture of diastereomers is surprisingly and unexpectedly rich in the content of the trans configuration (II) over the cis configuration (III) as defined in the following formulae: ##STR2## The preferred reaction conditions include use of a borane complex as the reducing agent and an acidic solvent such as trifluoroacetic acid.
摘要:
A process for producing chlorosulfate and sulfamate esters of 2,3:4,5-bis-O-(1-methylethylidene)-.beta.-D-fructopyranose and (1-methylcyclohexyl)methanol is disclosed. The process involves a two step procedure involving in the first step reacting of an alcohol with sulfuryl chloride in the presence of a tertiary or heterocyclic amine base in a solvent selected from the group consisting of toluene, t-butyl methyl ether or tetrahydrofuran to produce a chlorosulfate intermediate, which is preferably stabilized by an aqueous wash and/or treatment with a base, and in the second step reacting of the resulting intermediate with an amine in a solvent selected from the group consisting of t-butyl methyl ether, tetrahydrofuran and lower alkanol.
摘要:
A process for preparing a compound of formula I wherein R1 and R2 are independently selected from the group consisting of hydrogen, lower alkyl and halogen
摘要:
The present invention provides a topiramate immunoassay and reagents for use in the immunoassay. In particular, topiramate is derivatized at the sulfamate moiety or the 9-carbon or 10-carbon methyl group of topiramate to add a label bound directly or through a linking group for use as a tracer (competitive analyte analog) or to add a linking group bound to a carrier for use as an immunogen to induce anti-topiramate antibodies. Immunoassay methods and kits are also provided.
摘要:
The present invention is directed to processes for the preparation of substituted pyrimidine derivatives, useful as intermediates in the synthesis of histamine H4 receptor modulators, and to intermediates in H4 modulator synthesis.
摘要:
The present invention is directed to a novel process for the preparation of piperazinyl and diazepanyl benzamide derivatives, useful for the treatment of disorders and conditions mediated by a histamine receptor, preferably the H3 receptor.
摘要:
A liquid phase process for preparing GnRH peptide analogs of the formula:G-AA.sub.1 -(A)D-Phe-AA.sub.3 -AA.sub.4 -(R.sub.2)-AA.sub.5 -AA.sub.6 AA.sub.7 -AA.sub.8 -Pro-AA.sub.10 -NH.sub.2Formula 1which comprises:(a) reacting a peptide of the formula:T-(R.sub.2)AA.sub.5 -AA.sub.6 -Xwhere T is (P.sub.2)AA4 orP.sub.2 and X is AA.sub.7 --OH or is --OH, with a peptide of the formula:X'-AA.sub.8 -Pro-AA.sub.10 -NH.sub.2or acid-addition salt form thereof, where X' is AA.sub.7 when X is absent and X' selected from P-Ala, Gly, GABA, the D- and L- isomers of Ala, amino isobutyric acid, 6-amino-hexanoic acid, Ser, Thr, His, Tyr, Asn, and Gln' is absent when X is AA.sub.7 --OH;in a liquid reaction medium in the presence of a peptide coupling reagent and a strong organic amine base to obtain a product of the formula:T-(R.sub.2)AA.sub.5 -AA.sub.6 -AA.sub.7 -AA.sub.8 -Pro-AA.sub.10 -NH.sub.2(b) removing the P.sub.2 protecting group at the N-terminus, and(c) reacting the product of step (b) or an acid addition salt thereof, with a peptide of the formula:G-AA.sub.1 -(R.sub.1)D-Phe-AA.sub.3 -T'or acid-addition salt form thereof, where T' is AA.sub.4 --OH when T is absent and is absent when T is P2-AA.sub.4, in a liquid reaction medium to obtain a GnRH peptide of the formula:G-AA.sub.1 -(A)D-Phe-AA.sub.3 -AA.sub.4 -(R.sub.2)AA.sub.5 -AA.sub.6 -AA.sub.7 -AA.sub.8 -Pro-AA.sub.10 -NH.sub.2.
摘要翻译:用于制备下式的GnRH肽类似物的液相方法:G-AA1-(A)D-Phe-AA3-AA4-(R2)-AA5-AA6AA7-AA8-Pro-AA10-NH2式1,其包含:(a )使下式的肽与下式的肽反应:其中T是(P2)AA4或P2,X是AA7-OH或-OH的式(T-(R2)AA5-AA6-X)肽与下式的肽反应:X'-AA8-Pro -AA10-NH2或其酸加成盐形式,其中当X不存在时X'为AA 7,X'选自P-Ala,Gly,GABA,Ala的D-和L-异构体,氨基异丁酸, 当X是AA7-OH时,氨基己酸,Ser,Thr,His,Tyr,Asn和Gln'不存在; 在液体反应介质中,在肽偶联剂和强有机胺碱的存在下,得到下式的产物:((R 2)AA 5 -A AA 6 -A AA 7 -A AA 8 -Pro-AA 10 -NH 2(b) P2保护基团,和(c)使步骤(b)的产物或其酸加成盐与下式的肽反应:G-AA1-(R1)D-Phe-AA3-T' 或其酸加成盐形式,其中当T不存在时T'为AA4-OH,当T为P2-AA4时不存在,在液体反应介质中得到G-AA1 - (A)的GnRH肽, D-Phe-AA3-AA4-(R2)AA5-AA6-AA7-AA8-Pro-AA10-NH2。
摘要:
The present invention is directed to processes for the preparation of substituted pyrimidine derivatives, useful as intermediates in the synthesis of histamine H4 receptor modulators, and to intermediates in H4 modulator synthesis.
摘要:
The present invention is directed to a process for chemoselective substitution on a halopyrimidine carboxaldehyde having multiple reactive sites and subsequent stereoselective oxime formation.