Results 51 to 60 of about 22,823 (226)

An archaeal family-B DNA polymerase variant able to replicate past DNA damage: occurrence of replicative and translesion synthesis polymerases within the B family [PDF]

, 2014
A mutant of the high fidelity family-B DNA polymerase from the archaeon Thermococcus gorgonarius (Tgo-Pol), able to replicate past DNA lesions, is described.
Aidan J. Doherty, Barry, Bebenek, Bernard A. Connolly, Biles, Boiteux, Braithwaite, Brautigam, Brian J. Keith, Burgers, Cadet, Cann, Cann, Cline, Cozens, Cubonová, Fenton, Firbank, Franklin, Gan, Goodman, Haracska, Haracska, Heller, Hogg, Ishino, Johnson, Johnson, Johnson, Joyce, Jozwiakowski, Jozwiakowski, Keith, Kelley, Kelman, Kim, Kunkel, Kunkel, Lawrence, Lawrence, Lawrence, Leadon, Leigh, Louise Gilroy, Lundberg, McCulloch, Nick McElhinny, Northam, Perera, Pettersen, Pfeifer, Prakash, Pursell, Rangarajan, Reha-Krantz, Sabouri, Sabouri, Sarmiento, Schneider, Shaw, Stanislaw K. Jozwiakowski, Stillman, Swan, Teoule, Terpe, Wang, Wang, Waters, Yang   +68 more
core   +1 more source

Dibenzazepin‐verbrückte Netzwerk‐Polymer‐Phthalocyanine als abbaubare heterogene Photokatalysatoren

Angewandte Chemie, EarlyView.
Photodynamische Dibenzazepin‐Brücke wurde in Zink‐ und Kobalt‐Netzwerk‐Polymer‐Phthalocyanine (NP‐Pcs) eingeführt, um abbaubare heterogene Photokatalysatoren zu erhalten. Zum ersten Mal spielt die Bestrahlung mit Licht eine Schlüsselrolle beim „Design, der Verwendung und dem Abbau” von NP‐Pcs.
Erem Ahmetali, Azra Kocaarslan, Vanessa Trouillet, Stefan Heißler, Stefan Bräse   +4 more
wiley   +1 more source

2α-Acetoxy-5α-methoxycaryophyll-8(15)-en-3-one

Acta Crystallographica Section E, 2009
The title compound, C18H28O4, crystallizes with two molecules in the asymmetric unit. Both molecules have similar conformations of nine-membered rings, which are trans-fused with cyclobutane fragments.
Wen Zhang, Hong-Quan Duan
doaj   +1 more source

Diversifying molecular and topological space via a supramolecular solid-state synthesis: a purely organic mok net sustained by hydrogen bonds

IUCrJ, 2019
A three-dimensional hydrogen-bonded network based on a rare mok topology has been constructed using an organic molecule synthesized in the solid state. The molecule is obtained using a supramolecular protecting-group strategy that is applied to a solid ...
Shalisa M. Oburn, Michael A. Sinnwell, Devin P. Ericson, Eric W. Reinheimer, Davide M. Proserpio, Ryan H. Groeneman, Leonard MacGillivray   +6 more
doaj   +1 more source

Dibenzazepine Bridged Network Polymeric Phthalocyanines as Degradable Heterogeneous Photocatalysts

Angewandte Chemie International Edition, EarlyView.
Dibenzazepine photodynamic bridge has been introduced to zinc and cobalt networks phthalocyanines (NP‐Pcs) to obtain degradable heterogeneous photocatalysts. For the first time, light irradiation plays a key role in “design, use and degradation” of NP‐Pcs.
Erem Ahmetali, Azra Kocaarslan, Vanessa Trouillet, Stefan Heißler, Stefan Bräse   +4 more
wiley   +1 more source

UV-Induced Structural Changes of Model DNA Helices Probed by Optical Spectroscopy [PDF]

, 2009
International audienceChemical alterations of DNA, if not repaired, may lead to carcinogenic mutations. Structural modifications of the helix around the lesion enable its recognition by repair enzymes.
Bányász, A., Douki, Thierry, Karpati, S., Lazzarotto, E., Markovitsi, D.   +4 more
core   +4 more sources

Photochemical Cyclization of Tertiary Buta‐2,3‐dienamides to β‐Lactams Upon Triplet Energy Transfer

Angewandte Chemie International Edition, EarlyView.
Energy transfer is the key to the successful photocyclization of the title compounds to 3,4‐disubstituted 2‐azetidinones. If the substituent at the nitrogen atom is primary (R2 = H), trans products are formed exclusively. The triplet state of xanthen‐9‐one (XT) was found to be quenched by an allene amide (R, R2 = H, R1 = Bn, and R3 = Ph) with a ...
Johannes Hofer, Maria‐Sophie Bertrams, Christoph Kerzig, Thorsten Bach   +3 more
wiley   +1 more source

Effects of Substituents on the Length of Central C(sp^3)-C(sp^3) Bond in Anthracene Photodimers and Related Molecules [PDF]

, 1986
Effects of substituents on the lengths of the central C–C single bond in the butterfly-shaped anthracene photodimers (1)–(7) and lepidopterenes (8) are studied.
Buda, Andrzej B., Choi, Chang Sun, Dougherty, Dennis A., Kaupp, Gerd, Rudziński, Jerzy M., Ōsawa, Eiji   +5 more
core   +1 more source

The Diarylprolinol Silyl Ethers: After 20 Years Still Opening New Doors in Asymmetric Catalysis

Angewandte Chemie International Edition, EarlyView.
Catalysis Rules! The year 2025 marks the 20th anniversary of diarylprolinol silyl ethers in asymmetric organocatalysis. During the first decade after their discovery, these catalysts have been established as one of the most versatile tools in aminocatalysis. Although now considered mature, recent years have witnessed renewed innovation.
Enrico Marcantonio, René Slot Bitsch, Karl Anker Jørgensen   +2 more
wiley   +1 more source

An unexpected Ireland–Claisen rearrangement cascade during the synthesis of the tricyclic core of Curcusone C: Mechanistic elucidation by trial-and-error and automatic artificial force-induced reaction (AFIR) computations [PDF]

, 2019
In the course of a total synthesis effort directed toward the natural product curcusone C, the Stoltz group discovered an unexpected thermal rearrangement of a divinylcyclopropane to the product of a formal Cope/1,3-sigmatropic shift sequence.
Houk, K. N., Lee, Chung Whan, Morokuma, Keiji, Patel, Ashay, Petrova, Galina P., Stoltz, Brian M., Taylor, Buck L. H.   +6 more
core   +5 more sources