Title:
PHOSPHA-RHODOL COMPOUND, SALT OF SAME, AND FLUORESCENT DYE USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/181529
Kind Code:
A1
Abstract:
This phospha-rhodol compound represented by general formula (1) or a salt thereof has an absorption peak wavelength and a fluorescence peak wavelength, which change in accordance with the polarity of a solvent, while having an absorption peak and a fluorescence peak in a long wavelength range. Namely, this phospha-rhodol compound represented by general formula (1) or a salt thereof has solvatochromic characteristics.
(In the formula, R1 and R2 may be the same or different, and each represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted (hetero)aryl group; R3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, or a substituted or unsubstituted (hetero)aryl group; R4-R7 may be the same or different, and each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, or a sulfonic acid group; R1 and R4, and R2 and R6 may respectively combine with each other to constitute a substituted or unsubstituted alkylene group; and R8 represents a substituted or unsubstituted aryl group.)
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Inventors:
YAMAGUCHI SHIGEHIRO (JP)
TAKI MASAYASU (JP)
GRZYBOWSKI MAREK GRZEGORZ (JP)
TAKI MASAYASU (JP)
GRZYBOWSKI MAREK GRZEGORZ (JP)
Application Number:
PCT/JP2018/012880
Publication Date:
October 04, 2018
Filing Date:
March 28, 2018
Export Citation:
Assignee:
UNIV NAGOYA NAT UNIV CORP (JP)
International Classes:
C09B11/00; A61K49/00; C07F9/6568; C09B11/16; G01N21/78; G01N33/58
Domestic Patent References:
| WO2016133218A1 | 2016-08-25 | |||
| WO2016116111A1 | 2016-07-28 |
Foreign References:
| US8506655B1 | 2013-08-13 |
Other References:
R. R. SAUERS ET AL.: "Shaping the absorption and fluorescence bands of a class of efficient, photoactive chromophores: synthesis and properties of some new 3H-xanthen-3-ones", DYES AND PIGMENTS, vol. 8, no. 1, 1987, pages 35 - 53, XP055558610
A. P. PIECHOWSKI ET AL.: "A new family of lasing dyes from an old family of fluors", OPTICS COMMUNICATIONS, vol. 50, no. 6, 15 July 1984 (1984-07-15), pages 386 - 392, XP055558611
M. GRZYBOWSKI ET AL.: "Selective Conversion of P=0 - Bridged Rhodamines into P=0 - Rhodols: Solvatochromic Near - Infrared Fluorophores", CHEMISTRY A EUROPEAN JOURNAL, vol. 23, no. 53, 27 July 2017 (2017-07-27), pages 13028 - 13032, XP055558613
A. P. PIECHOWSKI ET AL.: "A new family of lasing dyes from an old family of fluors", OPTICS COMMUNICATIONS, vol. 50, no. 6, 15 July 1984 (1984-07-15), pages 386 - 392, XP055558611
M. GRZYBOWSKI ET AL.: "Selective Conversion of P=0 - Bridged Rhodamines into P=0 - Rhodols: Solvatochromic Near - Infrared Fluorophores", CHEMISTRY A EUROPEAN JOURNAL, vol. 23, no. 53, 27 July 2017 (2017-07-27), pages 13028 - 13032, XP055558613
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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