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US5164492A Expired / Lapsed US ⏱️ 0.0 years remaining

Glycoside derivatives, polymers containing glycoside derivatives, process for their preparation and use of said polymers

Assignee: Nippon Fine Chemical Co Ltd
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Filing: 1989-10-25
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Granted: 1992-11-17
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Expires: 2009-10-25
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Abstract

Abstract PCT No. PCT/JP89/01097 Sec. 371 Date Jun. 26, 1990 Sec. 102(e) Date Jun. 26, 1990 PCT Filed Oct. 25, 1989 PCT Pub. No. WO90/04598 PCT Pub. Date May 3, 1990.The present invention provides a glycoside derivative represented by the formula <IMAGE> wherein G-O- is a saccharide residue having no protective group, R is a hydrogen atom or a methyl group, m is 1 or 2, n is an integer of 1 to 4, and l is an integer of 1 or more provided that l</=n; a polymer containing the glycoside derivative; a process for their preparation, and the use of the polymers.

Inventors

  • 👤 Sadaya Kitazawa
  • 👤 Masakazu Okumura
  • 👤 Masaki Kojima
  • 👤 Keisuke Kinomura
  • 👤 Toshiyuki Sakakibara

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 09:52
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/10; A; A61; A61L; A61L33/00; A61L33/06; A61L33/064; C07H15/08; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C08F20/30; C08F290/00; C08F290/08; C08F290/10; C08F299/00; C08F299/02; C08F299/022; C08F299/024; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/054; C08J7/056; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; C08J2369/00; C08J2433/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 60 words
A glycoside derivative represented by the formula ##STR15## wherein G--O-- (oxygen is attached to carbon number one) is a saccharide residue free of the protective group, R is a hydrogen atom or a methyl group, m is 1 or 2, n is an integer of 1 to 4, and l is an integer of 1 or more provided that l≦n.
Claim 2
Dependent Claim 60 words
A glycoside derivative represented by the formula ##STR15## wherein G--O-- (oxygen is attached to carbon number one) is a saccharide residue free of the protective group, R is a hydrogen atom or a methyl group, m is 1 or 2, n is an integer of 1 to 4, and l is an integer of 1 or more provided that l≦n.
Claim 3
Dependent Claim 107 words
A process for preparing the glycoside derivative of claim 1 which comprises reacting an alkyl glycoside represented by the formula G--O--R.sup.1 wherein G--O-- (oxygen is attached to carbon number one) is a saccharide residue free of the protective group and R 1 is a lower alkyl group with an ester of acrylic acid or methacrylic acid represented by the formula ##STR16## wherein R is a hydrogen atom or a methyl group, m is 1 or 2, n is an integer of 1 to 4 and l is an integer of 1 or more provided that l≦n in the presence of a heteropoly acid and a polymerization inhibitor.
Claim 4
Dependent Claim 86 words
A process for preparing the glycoside derivative of claim 1 which comprises reacting a saccharide having no protective group with an ester of acrylic acid or methacrylic acid represented by the formula ##STR17## wherein R is a hydrogen atom or a methyl group, m is 1 or 2, n is an integer of 1 to 4, and l is an integer of 1 or more provided that l≦n in the presence of an acid catalyst and a polymerization inhibitor while feeding oxygen to the reaction system.

References Cited (Backward Citations)

US3356652A Cited
SU968037A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-11-17 1996-05-18 1996-11-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-11-17 2000-05-18 2000-11-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-11-17 2004-05-18 2004-11-17 $7700.00 Window Closed / Lapsed

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