Patent ID: 11891457
Assignee: CHUGAI SEIYAKU KABUSHIKI KAISHA
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A  Y | IPC A  C

Claim 3:
4. The peptide compound according to claim 2, wherein the cyclic portion includes an intersection unit represented by the following general formula (I):, , wherein
R51 is —CO—NRR′ wherein
R and R′ each independently represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, or an optionally substituted aralkyl group, or
R and R′ together form a ring,
R52 is a C1-C6 alkyl group, an aryl group or an aralkyl group which optionally has a substituent,
R53 is a C1-C6 alkyl group which optionally has a substituent, or a hydrogen atom, or
R53 and R51 optionally be bonded to each other to form a C3-C5 alkylene group and form a 5- to 7-membered ring containing a nitrogen atom,
and
represents a binding site in the cyclic portion.