JP4417258B2 - 新規の天然源、即ち、ディクロスタキス・シネレアから(−)−エピカテキンを調製する方法 - Google Patents
新規の天然源、即ち、ディクロスタキス・シネレアから(−)−エピカテキンを調製する方法 Download PDFInfo
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- JP4417258B2 JP4417258B2 JP2004559946A JP2004559946A JP4417258B2 JP 4417258 B2 JP4417258 B2 JP 4417258B2 JP 2004559946 A JP2004559946 A JP 2004559946A JP 2004559946 A JP2004559946 A JP 2004559946A JP 4417258 B2 JP4417258 B2 JP 4417258B2
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- epicatechin
- cinerea
- methanol
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- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/60—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with aryl radicals attached in position 2
- C07D311/62—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with aryl radicals attached in position 2 with oxygen atoms directly attached in position 3, e.g. anthocyanidins
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61P31/18—Antivirals for RNA viruses for HIV
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/06—Free radical scavengers or antioxidants
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Description
(a)ディクロスタキス・シネレアの乾燥木材粉末をヘキサンで抽出するステップと;
(b)ステップ(a)の残留物をクロロホルムで抽出するステップと;
(c)ステップ(b)の残留物をメタノールで抽出するステップと;
(d)真空下に、ステップ(c)からのメタノール溶液を濃縮するステップと;(e)メタノール抽出物をシリカゲル(60〜120メッシュ)に吸着させて、シリカゲル(60〜120メッシュ)カラム(直径5cm、高さ100cm)に負荷するステップと;
(f)クロロホルム−メタノール勾配でカラムを溶離するステップと;
(g)クロロホルム中6%のメタノールで溶離されたフラクションを集めるステップと;
(h)溶離されたフラクションを濃縮して、純粋な(−)−エピカテキンを得るステップとを含む。
実施プロトコル:化合物(−)−エピカテキンを単離するための方法。ディクロスタキス・シネレアの乾燥した幹の樹皮パウダー(2kg)をソックスレー装置に負荷した。始めに、粉末をヘキサンで抽出した。ヘキサンを抽出した後の残留物をさらに、クロロホルムで抽出した。クロロホルムで抽出した後に、残留物をコニカルフラスコに入れ、室温でメタノールに浸漬した。メタノール溶液を濾過し、真空下に濃縮した(50g)。メタノール抽出物(50g)をシリカゲル(60〜120メッシュ)に吸着させ、シリカゲル(60〜120メッシュ)カラム(直径5cm、高さ100cm)に負荷した。
1. 分子式: C15H14O6
2. 1HNMR:[(CD3)2CO;200MHz]:δ7.04(1H、d、J2Hz、H−21)、6.86(1H、d、J8Hz、H−51)、6.78(1H、dd、J2および8Hz、H−61)、6.22(1H、d、J2Hz、H−8)、6.12
3. (1H、d、J2Hz、H−6)、4.88(1H、s、H−2)、4.20(1H、m、H−3)、2.80(2H、m、H−4、H−4’);
4. 13C−NMR[(CD3)2CO]:δ78.13(C−2)、65.01(C−3)、28.22(C−4)、156.57(C−5)、95.27(C−6)、156.29(C−7)、94.22(C−8)、155.79(C−9)、98.62(C−10)、130.69(C−11)、118.05(C−21)、144.47(C−31)、144.54(C−41)、114.97(C−51)、114.90(C−61);
5. EIMS:290(M+)、272、152、139および124。
6. IRνmax(KBr)cm-1:3306
7. [α]D 25−68°(c0.1、MeOH)
Claims (3)
- 新規の植物源ディクロスタキス・シネレアから(−)−エピカテキンを単離する方法において、
(a)ディクロスタキス・シネレアの乾燥木材粉末をヘキサンで抽出するステップと;
(b)ステップ(a)の残留物をクロロホルムで抽出するステップと;
(c)ステップ(b)の残留物をメタノール溶液で抽出して、メタノール抽出物を得るステップと;
(d)真空下に、ステップ(c)のメタノール抽出物を濃縮するステップと;
(e)ステップ(d)の濃縮されたメタノール抽出物をシリカゲルに吸着させて、シリカゲルカラムに負荷するステップと;
(f)クロロホルム−メタノール勾配でカラムを溶離するステップと;
(g)クロロホルム中6%のメタノールで溶離されるフラクションを集めるステップと;
(h)ステップ(g)の溶離されたフラクションを濃縮して、純粋な(−)−エピカテキンを得るステップとを含む方法。 - (−)−エピカテキンの収率は、乾燥材料に対して0.45%である、請求項1に記載のプロセス。
- 新規の植物源、即ち、ディクロスタキス・シネレアから、(−)−エピカテキンを単離する、請求項1に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2002/005428 WO2004054994A1 (en) | 2002-12-17 | 2002-12-17 | A process for the preparation of (-)-epicatechin from a new natural source namely dichrostachys cinerea |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006515293A JP2006515293A (ja) | 2006-05-25 |
JP4417258B2 true JP4417258B2 (ja) | 2010-02-17 |
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Application Number | Title | Priority Date | Filing Date |
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JP2004559946A Expired - Fee Related JP4417258B2 (ja) | 2002-12-17 | 2002-12-17 | 新規の天然源、即ち、ディクロスタキス・シネレアから(−)−エピカテキンを調製する方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6841687B2 (ja) |
EP (1) | EP1572674B1 (ja) |
JP (1) | JP4417258B2 (ja) |
AU (1) | AU2002348823A1 (ja) |
CA (1) | CA2510174C (ja) |
DE (1) | DE60212208T2 (ja) |
WO (1) | WO2004054994A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009501706A (ja) * | 2005-06-29 | 2009-01-22 | マース インコーポレーテッド | (+)−カテキン、(−)−エピカテキン、(−)−カテキン、(+)−エピカテキン、及びこれらの5,7,3’,4’−テトラベンジル化誘導体の調製 |
CN103833720B (zh) * | 2014-03-13 | 2016-05-11 | 中国人民解放军第二军医大学 | 一种儿茶素类化合物的制备方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55105677A (en) * | 1979-02-07 | 1980-08-13 | Norin Suisansyo Chiyagiyou Shikenjo | Production of catechins |
US6627232B1 (en) * | 2000-06-09 | 2003-09-30 | Mars Incorporated | Method for extracting cocoa procyanidins |
-
2002
- 2002-12-17 AU AU2002348823A patent/AU2002348823A1/en not_active Abandoned
- 2002-12-17 JP JP2004559946A patent/JP4417258B2/ja not_active Expired - Fee Related
- 2002-12-17 CA CA002510174A patent/CA2510174C/en not_active Expired - Fee Related
- 2002-12-17 WO PCT/IB2002/005428 patent/WO2004054994A1/en active IP Right Grant
- 2002-12-17 DE DE60212208T patent/DE60212208T2/de not_active Expired - Lifetime
- 2002-12-17 EP EP02781660A patent/EP1572674B1/en not_active Expired - Lifetime
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2003
- 2003-02-24 US US10/372,641 patent/US6841687B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2006515293A (ja) | 2006-05-25 |
US20040116717A1 (en) | 2004-06-17 |
US6841687B2 (en) | 2005-01-11 |
WO2004054994A1 (en) | 2004-07-01 |
AU2002348823A1 (en) | 2004-07-09 |
CA2510174A1 (en) | 2004-07-01 |
DE60212208D1 (de) | 2006-07-20 |
DE60212208T2 (de) | 2007-05-10 |
EP1572674A1 (en) | 2005-09-14 |
CA2510174C (en) | 2009-06-02 |
EP1572674B1 (en) | 2006-06-07 |
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