摘要:
The present invention relates to DC-88A and DC-89A1 and their production. These compounds are obtained by fermentation of microorganisms belonging to the genus Streptomyces. These compounds have antibacterial and anti-tumor activities and are useful as medicaments.
摘要:
The present invention relates to novel compounds DC-92B and DC-92D having anthraquinone moiety and represented by the following planar structural formula (I) and to a process for producing the same. These compounds can be produced by culture of a microorganism belonging to the genus Actinomadura, and are useful as medicaments because of their antibacterial and anti-tumor activities. ##STR1## wherein R is a group represented by formula (II) or formula (III): ##STR2##
摘要:
UCN-1028A and UCN-1028C having an anti-tumor activity and a protein kinase C inhibitory activity are produced by culturing a microorganism belonging to the genus Cladosporium.
摘要:
A novel compound, DC-107, is produced by culturing a microorganism belonging to the genus Streptomyces. It is useful as a medicine because of its antibacterial and anti-tumor activity.
摘要:
Compounds having immunosuppressive activity, cell growth inhibitory activity, anti-tumor activity, etc. are represented by formula I: and pharmaceutically acceptable salts thereof.
摘要:
The present invention relates to radicicol derivatives represented by the following formula (I) or pharmacologically acceptable salts thereof: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents hydrogen, alkanoyl, alkenoyl or tert-butyldimethylsilyl; (1) when X represents halogen, Y represents an oxygen atom or R.sup.4 --O--N (wherein R.sup.4 represents hydrogen or substituted or unsubstituted lower alkyl); and R.sup.3 represents hydrogen, alkanoyl, alkenoyl or the like; and (2) when X and R.sup.3 are combined with each other to represent a single bond; Y represents R.sup.4B --O--N (wherein R.sup.4B has the same meaning as R.sup.4). The radicicol derivatives of the present invention demonstrate tyrosine kinase inhibition activity and pharmacological activities such as antitumor, antimicrobial or immunosuppression effects.
摘要:
LK6-A derivatives which have immmunosuppressive activity, cell growth inhibitory activity, anti-tumor activity, etc. and which are represented by general formula (I): as defined herein, and pharmaceutically acceptable salts thereof.
摘要:
The present invention relates to compound LK6-A represented by the formula: ##STR1## which has immunosuppressive activity, and pharmaceutically acceptable salts thereof.