公开(公告)号：US3558725A

公开(公告)日：1971-01-26

申请号：US3558725D

申请日：1968-02-27

申请人： EISAI CO LTD

发明人： KOHNO SHIGEHARU ,  YAMATSU ISAO ,  UEYAMA SEIGO

IPC分类号： C07C31/18 ,  C07C31/26

CPC分类号： C07C31/18

摘要： NOVEL PROCESS FOR THE PREPARATION OF XYLITOL BY CATALYTIC HYDROGENATION OF A XYLOSE-CONTAINING SOLUTION WHICH HAS BEEN OBTAINED BY HYDROLYZING DEGRADATION OF COTTON SEED HULLS OR HUSKS, THE PROCESS BEING CHARACTERIZED BY THE FACT THAT SAID XYLOSE-CONTAINING SOLUTION IS DIRECTLY SUBJECTED TO THE CATALYTIC HYDROGENATION AFTER PURIFICATION THROUGH CONSECUTIVE TREATMENTS OF THE CRUDE SOLUTION FIRST WITH AN ACIDIC CATION EXCHANGE RESIN AND THEN WITH A MEDIUM BASIC ANION EXCHANGE RESIN.

公开(公告)号：US3558355A

公开(公告)日：1971-01-26

申请号：US3558355D

申请日：1968-07-12

申请人： EISAI CO LTD

发明人： OKAZAKI KANZO ,  KOHNO SHIGEHARU ,  YAMATSU ISAO ,  SUGIYAMA KUNISHIGE ,  UEYAMA SEIGO

IPC分类号： C13K11/00 ,  C13K1/00 ,  C13K3/00 ,  C13K9/00

CPC分类号： C13K11/00

摘要： PROCESS FOR PARTIAL INTERCONVERSION OF GLUCOSE INTO FRUCTOSE WHICH IS SWEETER THAN THE GLUCOSE BY CONTACTING AN AQUEOUS SOLUTION OF GLUCOSE WITH A MIXTURE OF OR A CONCOMITANT EXISTENCE OF A STRONGLY BASIC ANION EXCHANGE RESIN AND A MODERATELY BASIC ANION EXCHANGE RESIN, BOTH RESINS BEING IN THEIR HYDROXYL FORM, AT A MODERATE TEMPERATURE AND FOR A TIME SUFFICIENT TO ESTABLISH AN EQUILIBRIUM STATE BETWEEN THE GLUCOSE AND FRUCTOSE. BY VIRTUE OF THE CONCOMITANT USE OF THE AFOREMENTIONED RESINS, AN INCREASED CONVERSION VELOCITY OF GLUCOSE INTO FRUCTOSE IS OBTAINED WITHOUT INJURIOUS SIDE REACTION PRODUCTS WHICH WOULD BRING ABOUT CONTAMINATION, COLORATION AND OBJECTIONABLE FLAVOR OF THE FINAL PRODUCT.

公开(公告)号：US3586664A

公开(公告)日：1971-06-22

申请号：US3586664D

申请日：1969-03-19

申请人： EISAI CO LTD

发明人： KOHNO SHIGEHARU ,  YAMATSU ISAO

IPC分类号： C07H9/04 ,  C07H15/04 ,  C07C47/18

CPC分类号： C07H9/04 ,  C07H15/04 ,  Y10S514/87

摘要： NOVEL AND NOVEL XYLOSE DERIVATIVES AND PREPARATION THEREOF, REPRESENTED BY THE GENERAL FORMULA

2-(R1-O-),3-HO,4-(R2-O-),5-(R3-O-CH2-)TETRAHYDROFURAN

WHEREIN R1 IS AN ALKYL OR ARALKYL RADICAL HAVING MORE THAN TWO CARBON ATOMS AND EACH OF R2 AND R3 IS AN ALKYL, ARALKYL OR ARACYL RADICAL. THE NEW XYLOSE DERIVATIVES ARE EFFECTIVE FOR MEDICAL TREATMENT OF INFLAMMATION OF EDEMA CAUSED BY ACETYLCHOLINE, HISTAMINE AND BRADYKININ.