JPS57120584A - Production of catechin derivative - Google Patents

Production of catechin derivative

Info

Publication number
JPS57120584A
JPS57120584A JP746981A JP746981A JPS57120584A JP S57120584 A JPS57120584 A JP S57120584A JP 746981 A JP746981 A JP 746981A JP 746981 A JP746981 A JP 746981A JP S57120584 A JPS57120584 A JP S57120584A
Authority
JP
Japan
Prior art keywords
positions
catechin
variety
compound
produce
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP746981A
Other languages
Japanese (ja)
Inventor
Shoji Ikeda
Kenji Yoshida
Yoshiaki Ikeda
Goro Tsukamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanebo Ltd
Original Assignee
Kanebo Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kanebo Ltd filed Critical Kanebo Ltd
Priority to JP746981A priority Critical patent/JPS57120584A/en
Publication of JPS57120584A publication Critical patent/JPS57120584A/en
Pending legal-status Critical Current

Links

Landscapes

  • Pyrane Compounds (AREA)

Abstract

PURPOSE: Selective acylation is effected in 5 and 7 positions of catechin in the presence of boric acid under a basic condition, when necessary, further acylation in 3 and/or 3', 4' positions is conducted to produce a catechin derivative used for a variety of purposes such as carcinostatic agent.
CONSTITUTION: An acylating agent is made to act on catechin of formulaIin the presence of boric acid under a basic condition to prepare 5,7-O-diacylcatechin of formula II (R1 is acyl residue of organic carboxyl, carbonylic or sulfonic acid). Further, when necessary, the hydroxyls in 3 and/or 3', 4' positions in the compound of formulaIa are converted into O-acyls or O-alkyls to produce a compound of formula III (R2, R3 are the same group in R1, alkyl or substituted alkyl, H). The process readily gives a variety of catechin derivatives having different substituents in the 5, 7 positions from in 3', 4' positions.
COPYRIGHT: (C)1982,JPO&Japio
JP746981A 1981-01-20 1981-01-20 Production of catechin derivative Pending JPS57120584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP746981A JPS57120584A (en) 1981-01-20 1981-01-20 Production of catechin derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP746981A JPS57120584A (en) 1981-01-20 1981-01-20 Production of catechin derivative

Publications (1)

Publication Number Publication Date
JPS57120584A true JPS57120584A (en) 1982-07-27

Family

ID=11666650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP746981A Pending JPS57120584A (en) 1981-01-20 1981-01-20 Production of catechin derivative

Country Status (1)

Country Link
JP (1) JPS57120584A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041137A1 (en) * 1996-04-17 1997-11-06 Unifob Use of anthocyanidin and anthocyanidin derivatives
JP2008509939A (en) * 2004-08-19 2008-04-03 ザ・ホンコン・ポリテクニック・ユニバーシティ (-)-Epigallocatechin gallate derivative for inhibiting proteasome

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041137A1 (en) * 1996-04-17 1997-11-06 Unifob Use of anthocyanidin and anthocyanidin derivatives
JP2008509939A (en) * 2004-08-19 2008-04-03 ザ・ホンコン・ポリテクニック・ユニバーシティ (-)-Epigallocatechin gallate derivative for inhibiting proteasome

Similar Documents

Publication Publication Date Title
JPS5432460A (en) Cycloalkylidenemethylphenylacetic acid derivative and their preparation
JPS52286A (en) Method of preparing 1-(3-phenylpropyl)-4-acylpiperazine derivatives
JPS5239653A (en) Process for preparing antibiotics of 3',4'-dideoxykanamycin b derivati ves
JPS57120584A (en) Production of catechin derivative
JPS57118580A (en) Novel catechin derivative
JPS51125352A (en) Process for preparing 3-methoxy-alpha trifluoromethylphenyl- acetoxycyclope ntene-5-olderivatives
JPS543090A (en) Novel derivative of cephalosporin compound and its preparation
JPS52100473A (en) Novel azimidebenzamide derivative and its production
JPS5716882A (en) Production of benzo-heteroring derivative
JPS5276434A (en) Dungicides for nonmedical use and method of making the same
JPS5427578A (en) 1-carboxyalkylcarbamoyl-5-fluorouracil derivatives and their preparation
JPS5612393A (en) Novel camptothecin derivative
JPS5419980A (en) Gamma-pyrone and gamma-pyridone derivative
JPS5212168A (en) 6-amino chroman derivatives
JPS5359656A (en) Silacyclopropene derivatives and process for preparation of the same
JPS51133487A (en) Process for preparing 3-amino-1-(alpha -carboxy-4-hydroxybenzyl)-2-azetidi nones
JPS51125281A (en) A process for preparing indazole derivatives
JPS51136643A (en) Process for preparation of aromatic ester derivatives
JPS5259182A (en) Preparation of cephalosporin compounds
JPS5242841A (en) Process for preparation of thiolcarbamate derivatives
JPS5653685A (en) Production of cephalosporin derivative
JPS52125169A (en) Tetrahydropyran-5-one derivatives and method of preparing the same
JPS51128961A (en) Process for preparing 8-azaprostanoic acid derivatives
JPS51128980A (en) Process for preparing 3,4- dihydrocarbostyril derivatives
JPS5325519A (en) Novel thioacrylamide and its preparation