Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2005-02-08
2005-02-08
Tsang, Cecilia (Department: 1625)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C546S242000, C546S245000
Reexamination Certificate
active
06852735
ABSTRACT:
A compound of the formula (I):and a compound of the formula (V):as well as a compound of the formula (X):which are each a novel siastatin B derivative having a potent inhibitory activity against a glycosidase, are now synthesized by new processes.The compound of the formula (I), the compound of the formula (V) and the compound of the formula (X) have a potent enzyme-inhibitory activity to a glycosidase, which is particularly N-acetyl-galactosaminidase, galactosidase, glucosidase and mannosidase.
REFERENCES:
Nishmura et al J. Am. Chem. Soc. vol. 110, pp 7249-7250 (1988).*
Jensen et al, “Synthesis and investigation of L-fuco- and D-glucurono-azafagomie” J. Chem. Soc. Perkins 1, vol. 1, No. 9 (2002.*
Nishmura et al, Jol. of Antibiotics, vol. 45, No. 6, pp. 963-970.*
Kudo et al, Jol. of Antibiotics, vol. 45, No. 6, pp. 963-970.
Nishimura Yoshio
Shitara Eiki
Takeuchi Tomio
Covington Raymond
Meiji Seika Kaisha Ltd.
Schulman B. Aaron
Stites & Harbison PLLC
Tsang Cecilia
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