US4398023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
β-1,3-Glucanpolyol, process for preparation thereof, and utilization thereof
Assignee: Meito Sangyo KK
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Filing: 1980-08-29
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Granted: 1983-08-09
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Expires: 2000-08-29
Abstract
Abstract β-1,3-glucanpolyol derived from β-1,3-glucan produced by a β-1,3-glucan-producing strain of the genus Pestalotia, said glucanpolyol having an intrinsic viscosity [η] of about 1 to about 10 and comprising a main chain having as repeating units β-1,3-glucopyranose units of the following formula →3) β-D-Glc (1→ wherein Glc represents a glucopyranose residual moiety, and bonded thereto, either side chains of formula (B), or both side chains of formulas (A) and (B) below ##STR1## wherein n represents a number of from 0 to 1, and →3) β-D-Glc (1→ represents the above main chain, and R represents a group derived from β-D-glucopyranose of the formula ##STR2## a process for production thereof, and its pharmaceutical use.
Inventors
- 👤 Hideki Miyachi
- 👤 Akira Misaki
- 👤 Mariko Kakuta
- 👤 Mineo Nakayama
- 👤 Hideo Nagae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; A; A61; A61K; A61K36/00; A61K36/06; A61K36/062; A61P; A61P35/00; C07; C07H; C07H3/00; C07H3/06; C08; C08B; C08B37/00; C08B37/0006; C08B37/0024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
β-1,3-glucanpolyol derived from β-1,3-glucan produced by a β-1,3-glucan-producing strain of the genus Pestalotia, said glucanpolyol having the following characteristics [I] and [II]: [I] said glucanpolyol comprises a main chain having as repeating units β-1,3-glucopyranose units of the following formula →3)β-D-Glc (1→ wherein Glc represents a glucopyranose residual moiety, and bonded thereto, either side chains of formula (B), or both side chains of formulas (A) and (B) below ##STR7## wherein n represents a number of from 0 to 1, and →3) β-D-Glc (1→ represents the above main chain, ##STR8## wherein n and →3) β-D-Glc (1→ are the same as defined with respect to formula (A), and R represents a groups derived from β-D-glucopyranose of the formula ##STR9## said glucanpolyol has an intrinsic viscosity of about 1 to about 10 and wherein, per 100 β-1,3-glucopyranose units of the main chain, the number of said side chains of formula (B) is about 25 to about 70, and the number of said side chains of formula (A) is 0 to about 45.
Claim 2
Dependent Claim
168 words
β-1,3-glucanpolyol derived from β-1,3-glucan produced by a β-1,3-glucan-producing strain of the genus Pestalotia, said glucanpolyol having the following characteristics [I] and [II]: [I] said glucanpolyol comprises a main chain having as repeating units β-1,3-glucopyranose units of the following formula →3)β-D-Glc (1→ wherein Glc represents a glucopyranose residual moiety, and bonded thereto, either side chains of formula (B), or both side chains of formulas (A) and (B) below ##STR7## wherein n represents a number of from 0 to 1, and →3) β-D-Glc (1→ represents the above main chain, ##STR8## wherein n and →3) β-D-Glc (1→ are the same as defined with respect to formula (A), and R represents a groups derived from β-D-glucopyranose of the formula ##STR9## said glucanpolyol has an intrinsic viscosity of about 1 to about 10 and wherein, per 100 β-1,3-glucopyranose units of the main chain, the number of said side chains of formula (B) is about 25 to about 70, and the number of said side chains of formula (A) is 0 to about 45.
References Cited (Backward Citations)
US3301848A
Cited
US3396082A
Cited
US3632802A
Cited
US3856775A
Cited
US3754925A
Cited
US3822250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |