Journal
TETRAHEDRON LETTERS
Volume 49, Issue 8, Pages 1413-1416Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.12.052
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Funding
- NCI NIH HHS [R01 CA069571] Funding Source: Medline
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Seven 5-substituted 3-hydrazinyl derivatives of 3a, 4a-diaza-4,4-difluoro-8-phenyl boron dipyrromethene (BODIPY) were prepared for use as bioorthogonal fluorescent labels of aldehydes and ketones. The absorption energies can be tuned to absorb visible light over a large span of wavelengths by changing the nature of the 5-substituent. Optical properties of hydrazones formed with the 5-chloro derivative are affected by the nature of the electrophile such that aliphatic and aromatic hydrazones can be differentiated from each other and from unreacted fluorophore. (C) 2007 Published by Elsevier Ltd.
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