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Document Type and Number:
WIPO Patent Application WO/2011/093471
Kind Code:
Provided is a method for producing neoponkoranol or an analog thereof represented by structural formula [I] [wherein X- stands for a conjugated base of a Bronsted acid HX such as a carboxylate ion represented by R1COO-, a sulfonate ion represented by R2-SO3 -, a sulfate ion represented by SO4 2- or R3-OSO3 -, a phosphate ion represented by PO4 3-, R4(P=O)(O2 2-) or (R4)2(P=O)(O-), a halogen ion or a conjugated base of a Bronsted acid composed of a Lewis acid ion and a hydrogen halide]. Compared with synthetic methods having been reported in documents, the aforesaid method enables the production of neoponkoranol or an analog thereof (I) in a small number of steps at a high yield.

MURAOKA Osamu (4-1 Kowakae 3-chome, Higashi-Osaka-sh, Osaka 02, 〒5778502, JP)
村岡修 (〒02 大阪府東大阪市小若江3丁目4番1号 学校法人近畿大学内 Osaka, 〒5778502, JP)
Application Number:
Publication Date:
August 04, 2011
Filing Date:
January 28, 2011
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Takano Co., Ltd. (137 Miyada-mura, Kamiina-gun Nagano, 01, 〒3994301, JP)
タカノ株式会社 (〒01 長野県上伊那郡宮田村137 Nagano, 〒3994301, JP)
Kinki University (4-1 Kowakae 3-chome, Higashi-Osaka-shi Osaka, 02, 〒5778502, JP)
学校法人近畿大学 (〒02 大阪府東大阪市小若江3丁目4番1号 Osaka, 〒5778502, JP)
International Classes:
C07D333/46; C07H5/10; C07H15/203
Foreign References:
Other References:
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CHUNG, S. ET AL.: 'Synthesis and biological activities of(4,6-di-O-phosphonato-§ -D-mannopyranosyl)- methylphosphonate as an analog of 1L-myo-inositol 1,4,5-trisphosphate' CARBOHYDRATE RESEARCH vol. 260, no. 1, 1994, pages 39 - 50
BERKOWITZ, D.B. ET AL.: 'a-Fluorinated Phosphonates as Substrate Mimics for Glucose 6-Phosphate Dehydrogenase: the CHF Stereochemistry Matters' JOURNAL OF ORGANIC CHEMISTRY vol. 65, no. 15, 2000, pages 4498 - 4508
ESKANDARI, R. ET AL.: 'Potent Glucosidase Inhibitors: De-O-sulfonated Ponkoranol and Its Stereoisomer' ORGANIC LETTERS vol. 12, no. 7, 2010, pages 1632 - 1635
ESKANDARI, R. ET AL.: 'Probing the active-site requirements of human intestinal N-terminal maltase glucoamylase: The effect of replacing the sulfate moiety by a methyl ether in ponkoranol, a naturally occurring a-glucosidase inhibitor' BIOORGANIC & MEDICINAL CHEMISTRY LETTERS vol. 20, no. 19, 2010, pages 5686 - 5689
Attorney, Agent or Firm:
MATSUO Kenichiro (7th Floor, Shinkumi Akasaka Bldg. 10-17, Akasaka 1-chome, Chuo-ku, Fukuoka-sh, Fukuoka 42, 〒8100042, JP)
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