VERFAHREN ZUR HERSTELLUNG NON NEUEN BENZOPYRANDERIVATEN

申请公布号：PT68289(A)

申请号：PT19780068289

申请日期：1978.07.13

申请公布日期：1978.08.01

申请人：

CIBA GEIGY AG

发明人：DR. GEORGES HAAS;DR. ALBERTO ROSSI;DR. KNUT A. JAEGGI;ALEX SELE

分类号：C07D311/74;A61K31/352;C07D311/22;C07D311/30;C07D311/94;C07D501/20;C07D501/38;(IPC1-7):07D311/22

主分类号：C07D311/74

摘要：<p>The present invention relates to novel benzopyrane derivatives, especially 3-oxaloamino-4-oxo-4H-1-benzopyrane derivatives of the formula I <IMAGE> (I) in which Ph is substituted or unsubstituted 1,2-phenylene, R is free, esterified or amidated carboxyl and R1 is hydrogen or a substituted or substituted hydrocarbon radical, in the free from or in the form of a salt, exhibit antiallergic activities and are accordingly useful as active ingredients of antiallergic pharmaceutical preparations.</p>

SUPPORTING STRUCTURE OF VIBRATION TYPE SPRING

CAMERA SYSTEM DRIVE CONTROLLING METHOD FOR LOW POWER DRIVE

FORMING METHOD OF SEA STOCK FARM USING ARTIFICIAL FISHING REEF

RECOGNITION SYSTEM AND METHOD OF INFORMATION TELEPHONE NUMBER

CIRCUIT FOR DRIVING BLDC(BRUSHLESS DIRECT CURRENT) MOTOR WITHOUT A SENSOR

CIRCULATOR ABLE TO BE INTEGRATED WITH SEMICONDUCTOR DEVICE

CYLINDER BLOCK OF AXLE-TYPED PISTON PUMP

SYSTEM-DOWN PREVENTING METHOD WHEN SWITCHING OVER CHANNEL CARD OF WIRELESS PAGING DATA SATELLITE COMMUNICATION SYSTEM

MAGNET FIXING STRUCTURE OF DEFLECTING YOKE

CIRCUIT CONNECTING DEVICE AND PLIABLE PRINTED CIRCUIT BOARD

REFERENCE VOLTAGE GENERATING CIRCUIT

SPREAD FILM OF CONCRETE STRUCTURE AND SHEET DOUBLE WATERPROOFING MATERIAL AND METHOD THEREOF

PRODUCTION METHOD OF DIFFERENT SHRINKAGE MIXED FIBROUS POLYESTER FILAMENT YARN

ROTATION SYSTEM FOR HEAT MEDIA

SEMICONDUCTOR MEMORY DEVICE HAVING A BOOSTING CIRCUIT

DEVICE AND CONTROL METHOD OF DIGITAL DISPLAY IN GRAPHIC PANEL

DEHYDRATING FILTER AND FILTRATING BAG MANUFACTURING METHOD THEROF

D FLI-FLOP

BEAM LEAD BONDING HEAD

SWITCHED RELUCTANCE MOTOR