Vicarious Nucleophilic Substitution of Hydrogen in Nitroarenes using 1-Chloroalkanesulfonic Esters; A Simple Synthesis of 1-(Nitrophenyl)-alkanesulfonic and (Nitrophenyl)-methanesulfonic Esters
A process is disclosed for the preparation of an indole of general formula (I)
wherein R1 represents H or C1-6-alkyl or C3-6-alkenyl,
R2 represents H or C1-3 alkyl, C3-6 alkenyl, aryl, ar(C1-4)alkyl or
C5-7 cycloalkyl,
R3 represents H or C1-3 alkyl group;
R4 and R5, represent H or a C1-3 alkyl or propenyl group or together form an aralkylidene group; and Alk
represents a C2-3 alkylene chain,
or a physiologically acceptable salt or solvate thereof which comprises reacting an indole of general formula (II) :
(wherein X represents a leaving group) with an amine R1R2NH.
The indoles of formula (I) are indicated for use in the treatment of migraine.
本发明公开了一种通式(I)吲哚的制备工艺
其中 R1 代表 H 或 C1-6- 烷基或 C3-6- 烯基、
R2 代表 H 或 C1-3 烷基、C3-6 烯基、芳基、ar(C1-4)烷基或
C5-7 环烷基、
R3 代表 H 或 C1-3 烷基;
R4 和 R5 代表 H 或 C1-3 烷基或丙烯基,或共同组成亚芳烷基;以及 Alk
代表 C2-3 亚烷基链、
或其生理上可接受的盐或溶液,其中包括使通式 (II) :
(其中 X 代表离去基团)与胺 R1R2NH 反应。
式(I)的吲哚可用于治疗偏头痛。
Indole derivates
申请人:GLAXO GROUP LIMITED
公开号:EP0147107A1
公开(公告)日:1985-07-03
Compounds are disclosed of the general formula (I)
wherein
R, represents halogen, alkyl, alkoxy or hydroxyl, or a group NRaRb or CONRaRb, where Ra and Rb are hydrogen, alkyl or alkenyl or with the nitrogen atom form a saturated monocylic 5 to 7-membered ring;
R2 represents hydrogen or alkyl; R3 and R4 represent hydrogen, C1-3 alkyl or propenyl or R3 and R4 together form an aralkylidene group; Alk represents a C2-3 alkylene chain; n and m, are integers of 1 to 4 or n is zero, and their physiologically acceptable salts and solvates.
The compounds are described as useful in treating pain originating from dilatation of the cranial vasculature in particular migraine and cluster headache and can be formulated in conventional manner as pharmaceutical compositions with carriers or excipients for administration by any convenient route.
Skrypnik, Yu. G.; Lyashchuk, S. N., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 5.1, p. 695 - 700
作者:Skrypnik, Yu. G.、Lyashchuk, S. N.
DOI:——
日期:——
MAKOSZA, M.;GOLINSKI, J., SYNTHESIS, BRD, 1983, N 12, 1023-1025
作者:MAKOSZA, M.、GOLINSKI, J.
DOI:——
日期:——
A NOVEL PROCESS FOR PREPARATION OF INDOLE DERIVATIVES
申请人:Potluri Babu Ramesh
公开号:US20070054953A1
公开(公告)日:2007-03-08
A novel process of preparation of a compound of 3-(2-Dimethylamino)-N-methyl-1H-indole-5-methane sulfonamide, which comprises of a reaction 4-hydrazino-N-methyl benzene methane sulfonamide with 4-dimethyl amino butyraldehyde diethyl acetal in a chlorinated solvent in the presence of ethyl poly phosphate and conversion of the crude product to a product of 3-(2-Dimethylamino)-N-methyl-1H-indole-5-methane sulfonamide succinate of extra high purity and colour.