摘要:
La presente invención describe un nuevo procedimiento para la modificación de amino ácidos cíclicos hidroxilados, particularmente la 4-hidroxiprolina, que es un amino ácido natural, comercial y relativamente barato, para dar otros amino ácidos de alta pureza óptica. El paso inicial del proceso es una escisión radicalaria, y el producto de escisión se convierte en amino ácidos no proteinogénicos usando reacciones como por ejemplo la reducción, la aminación reductiva, y la Horner-Wadsworth-Emmons. Es de destacar la aplicación del procedimiento a la modificación selectiva de péptidos. También se describen los productos de dicho procedimiento, como amino ácidos N-alquilados y/o con cadenas laterales con grupos amino, hidroxilo, alquenilo, etc. y sus derivados peptídicos, de interés como fármacos, catalizadores, sondas para imagen molecular, etc.
摘要:
Subject-matter of the present invention is a process for preparing intermediates for the synthesis of optically active beta-amino alcohols by enzymatic reduction of the corresponding beta-amino ketones. Subject-matter of the invention are also said novel synthesis intermediates and the use thereof in the preparation of active pharmaceutical ingredients, among which vilanterol and the salts thereof.
摘要:
Es wird ein Verfahren zur Herstellung von Acylglycinatsalzen der Formel (II) beschrieben, worin R 1 einen gesättigten linearen oder verzweigten Alkylrest mit 1 bis 21 Kohlenstoffatomen oder einen ein- oder mehrfach ungesättigten linearen oder verzweigten Alkenylrest mit 2 bis 21 Kohlenstoffatomen und B ein Kation, das von einer Base abgeleitet ist, bedeutet, und/oder der entsprechenden protonierten Acylglycinsäuren, dadurch gekennzeichnet, dass ein oder mehrere Fettsäuremonoethanolamide der Formel (I) worin R 1 die oben angegebene Bedeutung besitzt, mit Sauerstoff in Gegenwart eines Nebengruppenmetallkatalysators im alkalischen Medium zu einem oder mehreren Acylglycinatsalzen der Formel (II) oxidiert werden und im Fall der Herstellung der protonierten Acylglycinsäuren das oder die Acylglycinatsalze der Formel (II) zusätzlich mit einer Säure umgesetzt werden.
摘要:
Intermediates for the preparation of phenylalkanoic acid amides having excellent germicidal effects; a process for the preparation of the intermediates; and a process for preparing starting compounds for the preparation of the intermediates. Specifically, a process for the preparation of amides (IV), characterized by reacting a nitrile (I) with an acid to form an oxazolinone (II) through intramolecular cyclization, and reacting this oxazolinone (II) with a carboxyl compound (III) in the presence of a base.
摘要:
The present invention relates to a new diethanolamine derivative chelating agent having a high water solubility, a good chelating property, and biological degradation. The said new chelating agent can be prepared from reaction of diethanolamine and cyclic anhydride compound using lewis acid as the catalyst. The said process is uncomplicated, and does not use a severe condition, and also reduces the use of harmful chemicals.
摘要:
式(I)(式中、R 1 は置換もしくは非置換のアリールまたは置換もしくは非置換の芳香族複素環基を表し、 R 2 は置換もしくは非置換のアリール、置換もしくは非置換の芳香族複素環基、置換もしくは非置換の脂環式複素環基等を表し、 R 3 は水素原子を表すか、またはR 4 及び隣接する窒素原子と一緒になって置換もしくは非置換の複素環基を形成し、 R 4 は置換もしくは非置換のアリール、置換もしくは非置換の芳香族複素環基、置換もしくは非置換の脂環式複素環基等を表すか、またはR 3 及び隣接する窒素原子と一緒になって置換もしくは非置換の複素環基を形成し、 R 5 、R 6 及びR 7 は、同一または異なって水素原子またはメチルを表す)で表されるペンタジエナミド誘導体またはその薬学的に許容される塩等を提供する。
摘要翻译:公开了由式(I)表示的戊二烯酰胺衍生物或其药学上可接受的盐等。 (I)其中R 1表示取代或未取代的芳基或取代或未取代的芳族杂环基; R 2表示取代或未取代的芳基,取代或未取代的芳族杂环基,取代或未取代的脂环族杂环基等; R 3表示氢原子,或与R 4和R 3相邻的氮原子一起形成取代或未取代的杂环基; R 4表示取代或未取代的芳基,取代或未取代的芳香族杂环基,取代或未取代的脂环族杂环基等,或者与R 3, 与R 4相邻的氮原子形成取代或未取代的杂环基; R 5,R 6和R 7独立地表示氢原子或甲基。
摘要:
The present invention provides the compound having formula (I), wherein each of R1 and R2 is, substituted or unsubstituted, aryl, cycloalkyl, cycloalkylamino, naphtha, pyridineamino, piperidino, t-butyl, aryloxy, arylalkyloxy, or pyridine group; wherein A is an amido moiety, -O-, -S-, -NH-, or -CH2-; and wherein n is an integer from 3 to 8. The present invention also provides a method of selectively inducing growth arrest, terminal differentiation and/or apoptosis of neoplastic cells and thereby inhibiting proliferation of such cells. Moreover, the present invention provides a method of treating a patient having a tumor characterized by proliferation of neoplastic cells. Lastly, the present invention provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a therapeutically acceptable amount of the compound above.
摘要:
New original derivates of D,L-glutamic acid and D,L-aspartic acid having formula (I), where n is 1 or 2, R1 is a mono- or di-substituted phenyl group substituted with halogens such as chlorine and fluorine or with a methyl group in the 3 and 4 positions and in which R2 consists of a linear or branched alkyl group with 4 to 7 carbon atoms (preferably a pentyl group) and R3 is an alkyl group having 3 to 6 carbon atoms overall and containing an oxygen atom in the form of an ether linkage, such as for example the groups 2-ethoxyethyl, 3-methoxypropyl, 3-ethoxypropyl etc. or in the form of a hydroxyl group such as for example 3-hydroxypropyl etc. The compounds have antagonistic activity towards bio-active polypeptydes and are usable particularly in the treatment of illnesses of the digestive tract, or the central nervous system and anorexia and of all those affections (for example tumours) in which exogenic or endogenic bio-active polypeptydes are involved.
摘要:
The invention relates to the compound ( S )-n-hydroxy-2-(2-(4-methoxyphenyl) butanamido)thiazole-5-carboxamide, which is a novel histone deacetylase inhibitor. The invention further relates to the use of the compound for the inhibition of histone deacetylating activities of HDAC isoforms and treatment of histone deacetylase (HDAC)-associated diseases. The invention also relates to the pharmaceutical compositions and the making of the pharmaceutical compositions comprising the compound.