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10 Results Found

  • Entry
  • Open Access
9 Citations
10,450 Views
12 Pages

Photoremovable protecting groups (PPGs) (also often called photocages in the literature) are used for temporary inactivation of biologically active substrates. By photoirradiation the PPG could be cleaved off and the biological activity could be rest...

(This article belongs to the Section Chemistry)
  • Short Note
  • Open Access
2,781 Views
6 Pages

8-[4-(2-Hydroxypropane-2-yl)phenyl]-1,3,4,4,5,7-hexamethyl-4-boron-3a,4a-diaza-S-indacene

  • Anastasiya Zobnina,
  • Alexander Moskalensky and
  • Aleksey Vorob’ev

8 October 2021

During recent years, the BODIPY core became a popular scaffold for designing photoremovable protecting groups (PPG). In this paper, we report the synthesis of a new molecule—8-[4-(2-hydroxypropane-2-yl)phenyl]-1,3,4,4,5,7-hexamethyl-4-boron-3a,4a-dia...

(This article belongs to the Section Organic Synthesis and Biosynthesis)
  • Article
  • Open Access
20 Citations
9,204 Views
19 Pages

Photoactivatable Caged Prodrugs of VEGFR-2 Kinase Inhibitors

  • Boris Pinchuk,
  • Rebecca Horbert,
  • Alexander Döbber,
  • Lydia Kuhl and
  • Christian Peifer

In this study, we report on the design, synthesis, photokinetic properties and in vitro evaluation of photoactivatable caged prodrugs for the receptor tyrosine kinase VEGFR-2. Highly potent VEGFR-2 inhibitors 1 and 3 were caged by introduction of a p...

(This article belongs to the Section Medicinal Chemistry)
  • Article
  • Open Access
2 Citations
2,461 Views
12 Pages

Transient Absorption Spectroscopic Investigation of the Photocyclization–Deprotection Reaction of 3′,5′-Dimethoxybenzoin Fluoride

  • Runhui Liang,
  • Yuanchun Li,
  • Kin Cheung Lo,
  • Zhiping Yan and ,
  • Wenjian Tang,
  • Lili Du and
  • David Lee Phillips
  • + 2 authors+ 0 author

14 February 2024

The 3′,5′-dimethoxybenzoin (DMB) system has been widely investigated as a photoremovable protecting group (PRPG) for the elimination of various functional groups and has been applied in many fields. The photolysis of DMB fluoride leads to...

(This article belongs to the Special Issue Feature Papers in Photochemistry and Photocatalysis)
  • Communication
  • Open Access
13 Citations
5,263 Views
11 Pages

7 August 2020

Herein, we present a novel polymer architecture based on poly(2-oxazoline)s bearing protected thiol functionalities, which can be selectively liberated by irradiation with UV light. Whereas free thiol groups can suffer from oxidation or other spontan...

(This article belongs to the Special Issue In-Situ Forming and Self-Healing Hydrogels)
  • Article
  • Open Access
3 Citations
5,280 Views
14 Pages

A Photocleavable Contrast Agent for Light-Responsive MRI

  • Friederike Reeßing,
  • Sèvrin E. M. Huijsse,
  • Rudi A. J. O. Dierckx,
  • Ben L. Feringa and ,
  • Ronald J.H. Borra and
  • Wiktor Szymański
  • + 1 author+ 0 author

8 October 2020

Thanks to its innocuousness and high spatiotemporal resolution, light is used in several established and emerging applications in biomedicine. Among them is the modulation of magnetic resonance imaging (MRI) contrast agents’ relaxivity with the...

(This article belongs to the Special Issue Next Generation of MRI Agents)
  • Article
  • Open Access
2 Citations
3,251 Views
15 Pages

28 July 2023

We utilized a cycloaromatization reaction driven by relief of excited state antiaromaticity to photouncage aldehydes and ketones. We developed several synthetic routes towards the synthesis of photocaged carbonyls as allylically substituted 3-(2-(ary...

(This article belongs to the Special Issue Chemical Insights in Photofunctional Organic Compounds—a Themed Issue Dedicated to Professor Vaidhyanathan Ramamurthy)
  • Short Note
  • Open Access
663 Views
5 Pages

7 May 2026

The BODIPY core has emerged as a versatile scaffold for the design of photoremovable protecting groups (PPGs). Herein, we report the synthesis of a novel BODIPY–epinephrine conjugate linked via a carbamate moiety, enabling light-triggered relea...

  • Communication
  • Open Access
2 Citations
3,220 Views
17 Pages

5-Chlorocoumaranone-Conjugates as Chemiluminescent Protecting Groups (CLPG) and Precursors to Fluorescent Protecting Groups (FPG)

  • Tim Lippold,
  • Axel G. Griesbeck,
  • Robert Herzhoff,
  • Mathias S. Wickleder and ,
  • Laura Straub and
  • Niko T. Flosbach
  • + 1 author+ 0 author

7 September 2023

The introduction and cleavage of protecting groups and the subsequent release of protected molecules is an important tool in synthetic organic chemistry. When polyfunctionalized substrates are involved, the reactivity of similar functional groups mus...

  • Review
  • Open Access
57 Citations
8,859 Views
49 Pages

29 June 2021

Cancer chemotherapy is affected by a modest selectivity and toxic side effects of pharmacological interventions. Among novel approaches to overcome this limitation and to bring to therapy more potent and selective agents is the use of light for selec...

(This article belongs to the Special Issue Mechanism Underlying Tumor Relapse and Targeted Treatment Strategies)