Wenderoth, Lind & Ponack
Antibiotics of the KA-6606 series and pharmaceutical compositions thereof
 Novel antibiotics of the following structure ##STR1## wherein R represents a moiety selected from the group consisting of hydrogen, --COCH.sub.2 NH.sub.2, --COCH.sub.2 NHCONH.sub.2 and --COCH.sub.2 NHCHO; process for preparation thereof; and biologically pure culture for use therein. 
Kowa Company, Ltd.
C C C C C Y
C12R C07H C12N C12P C12R Y10S
additional inventional inventional inventional additional additional
Takeo Hisakatsu Toshihito Takeshi Masahito Takafumi Toshimi Akio Kazuhiro
Deushi Ito Mori Oda Nakayama Kunieda Mizoguchi Iwasaki Kamiya