公开(公告)号：US20190256544A1

公开(公告)日：2019-08-22

申请号：US16313357

申请日：2017-06-23

Applicant: The University of Tokyo

Inventor： Yasuteru URANO ,  Mako KAMIYA ,  Hiroki ITO ,  Yu KAWAMATA

IPC: C07H17/04 ,  C12Q1/34 ,  G01N33/58

Abstract: It is an object of the present invention to provide a fluorescence imaging probe capable of selectively visualizing target cells such as cells expressing β-galactosidase (lacZ expressing cells) at a single-cell level in a red fluorescence region, and of performing co-staining together with GFP.An intracellularly-retainable red fluorescent probe comprising a compound represented by the following formula (I) or a salt thereof: wherein: A represents a monovalent group cleaved by an enzyme; R1 represents a hydrogen atom, or one to four of the same or different substituents bonded to a benzene ring; R3, R4, R5, and R6 each independently represent —CFR10R11, —CF2R12, a hydrogen atom, a hydroxyl group, an alkyl group, or a halogen atom, wherein at least one of R3, R4, R5, and R6 is —CFR10R11 or —CF2R12; R2 and R7 each independently represent a hydrogen atom, a hydroxyl group, an alkyl group, or a halogen atom; R8 and R9 each independently represent a hydrogen atom or an alkyl group; R10, R11, and R12 each independently represent a hydrogen atom, an alkyl group, or an alkenyl group; X represents Si(Ra) (Rb), wherein Ra and Rb each independently represent a hydrogen atom or an alkyl group; and Y is —C(═O)— or —RcC(═O)—, wherein Rc is an alkylene group having 1-3 carbon atoms.