摘要:
Compound 0406 having a chemical structural formula represented by the chemical formula (1) below and having an excellent immuno suppressive activity, and pharmaceutically acceptable salts thereof. (wherein R 1 is -COCH 2 COOH or H; R 2 is -CO(CH 2 ) 3 CH 3 or -CO(CH 2 ) 4 CH 3 or H.)
摘要:
The present invention relates to compound 0406TP-1 represented by the general formula (I): wherein Ac represents an acetyl group and Me represents a methyl group, or a pharmaceutically acceptable salt thereof, having excellent antitumor activity and immunosuppressive activity.
摘要:
The present invention relates to a procedure for the production of tiacumicin B comprising fermentation of a micro-organism capable of producing tiacumicin B, in particular of the species Dactylosporangium aurantiacum or Actinoplanes deccanensis, in a culture broth containing emulsifiers, such as ethoxylated castor oil, in combination with antifoaming products and vegetable oils.
摘要:
Provided are a fructosylated mangiferin, a preparation method therefor and a use thereof, wherein the fructosylated mangiferin has a structural formula represented by the following formula (I), the method for preparing the fructosylated mangiferin includes adding a substance with fructosylating enzymatic activity to a transformed liquid containing mangiferin for biotransformation reaction, so as to convert the mangiferin into the fructosylated mangiferin, wherein the transformed liquid contains the mangiferin and a glycosyl donor; as well as a use of the fructosylated mangiferin in preparation of a medicament for treatment of tumor-related diseases.
摘要:
An acidic polycyclic ether antibiotic, having structure established by X-ray crystallography, is formed by fermentation of a novel microorganism, Actinomadura sp. ATCC 53708. This novel antibiotic is useful as an anticoccidial in chickens, in the prevention or treatment of swine dysentery, and as a growth promotant in cattle and swine.
摘要:
The present invention relates to a method for producing a glycosylated synthon or a monomer. Said method includes at least one step of placing at least one glycan-saccharase in the presence of at least one hydroxylated synthon and at least one saccharose. The invention also relates to a method for producing a glyco(co)polymer, including polymerizing at least two monomers separately obtained from the enzymatic glycosylation method according to the invention, and to a method for producing a glyco(co)polymer, preferably a block glyco(co)polymer, including coupling at least two monomers separately obtained from the enzymatic glycosylation method according to the invention.