Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Alexander Yu. Ivanov"'
Publikováno v:
Diversity, Vol 16, Iss 2, p 94 (2024)
Studying the distribution of morphologically cryptic animal species is always a very difficult task. Because most marsh frog species (the Pelophylax ridibundus complex) are cryptic, we used molecular markers to identify them. Three marsh frog species
Externí odkaz:
https://doaj.org/article/9a259c098fea4a268aefcf90b5e64495
Autor:
Anton O. Svinin, Ivan V. Bashinskiy, Spartak N. Litvinchuk, Oleg A. Ermakov, Alexander Yu. Ivanov, Leonid A. Neymark, Aleksander A. Vedernikov, Vitalij V. Osipov, Galina P. Drobot, Alain Dubois
Publikováno v:
Parasites & Vectors, Vol 13, Iss 1, Pp 1-11 (2020)
Abstract Background Cases of polydactyly in natural populations of amphibians have attracted great interest from biologists. At the end of the 1940s, the French biologist Jean Rostand discovered a polymorphic syndrome in some water frog (Anura: Pelop
Externí odkaz:
https://doaj.org/article/35a24061f9704fceb6ca3daf8851b610
Autor:
Vladislava V. Matveevskaya, Dmitry I. Pavlov, Taisiya S. Sukhikh, Artem L. Gushchin, Alexander Yu. Ivanov, Tatiana B. Tennikova, Vladimir V. Sharoyko, Sergey V. Baykov, Enrico Benassi, Andrei S. Potapov
Publikováno v:
ACS Omega, Vol 5, Iss 19, Pp 11167-11179 (2020)
Externí odkaz:
https://doaj.org/article/77a3e7d606554ad384c70359a889a51a
Autor:
Anton O. Svinin, Ivan V. Bashinskiy, Vitaly V. Osipov, Leonid A. Neymark, Alexander Yu. Ivanov, Oleg A. Ermakov, Spartak N. Litvinchuk
Publikováno v:
Herpetozoa, Vol 32, Iss , Pp 277-281 (2019)
The “anomaly P” was described in Palearctic water frogs of the genus Pelophylax by Jean Rostand as complex morphological anomalies of water frogs, including polydactyly, brachymely, hind limb oedema, bone outgrowths, spikes, flexions and addition
Externí odkaz:
https://doaj.org/article/3a1d8db2037c46f6b24258999fbd899c
Autor:
Daniya Ualiyeva, Oleg A. Ermakov, Spartak N. Litvinchuk, Xianguang Guo, Alexander Yu. Ivanov, Rui Xu, Jun Li, Feng Xu, Irina I. Arifulova, Alyona G. Kaptyonkina, Victor A. Khromov, Vladimir N. Krainyuk, Fakhriddin Sarzhanov, Tatjana N. Dujsebayeva
Publikováno v:
Diversity, Vol 14, Iss 10, p 869 (2022)
In order to study the diversity, phylogenetic relationships and distribution of marsh frogs of the Pelophylax ridibundus complex in Kazakhstan and northwest China, we conducted phylogeographic analyses of 125 samples from 53 localities using the mtDN
Externí odkaz:
https://doaj.org/article/90b8f9860b4644999dd2c4070291a6fe
Autor:
Mikhail V. Kalyaev, Dmitry S. Ryabukhin, Marina A. Borisova, Alexander Yu. Ivanov, Irina A. Boyarskaya, Kristina E. Borovkova, Lia R. Nikiforova, Julia V. Salmova, Nikolay V. Ul’yanovskii, Dmitry S. Kosyakov, Aleksander V. Vasilyev
Publikováno v:
Molecules, Vol 27, Iss 14, p 4612 (2022)
Reactions of 3-(furan-2-yl)propenoic acids and their esters with arenes in Brønsted superacid TfOH affords products of hydroarylation of the carbon–carbon double bond, 3-aryl-3-(furan-2-yl)propenoic acid derivatives. According to NMR and DFT studi
Externí odkaz:
https://doaj.org/article/d576867db7634a34854744ed4f1ce42f
Autor:
Dmitry S. Ryabukhin, Alexey N. Turdakov, Natalia S. Soldatova, Mikhail O. Kompanets, Alexander Yu. Ivanov, Irina A. Boyarskaya, Aleksander V. Vasilyev
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 1962-1973 (2019)
Reactions of 2-carbonyl- and 2-hydroxy(or methoxy)alkylbenzimidazoles with arenes in the Brønsted superacid TfOH resulted in the formation of the corresponding Friedel–Crafts reaction products, 2-diarylmethyl and 2-arylmethyl-substituted benzimida
Externí odkaz:
https://doaj.org/article/f130e5389a8d4768a91b3cb3db8220bb
Autor:
Alexander Yu. Ivanov, Alexander B. Ruchin, Alexander I. Fayzulin, Igor V. Chikhlyaev, Spartak N. Litvinchuk, Alexander A. Kirillov, Anton O. Svinin, Oleg A. Ermakov
Publikováno v:
Nature Conservation Research: Заповедная наука, Vol 4, Iss 2, Pp 125-128 (2019)
The unidirectional natural transfer of mitochondrial (mt) DNA from Pelophylax lessonae into P. ridibundus is a common phenomenon in central Europe. Cases of mtDNA exchange between P. lessonae and other non-clonal species of the genus Pelophylax have
Externí odkaz:
https://doaj.org/article/8d67bc5d63f94282835fcef94f4d40f7
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2897-2906 (2018)
In strong Brønsted acids (CF3SO3H, FSO3H, D2SO4), (arysulfonyl)allenes (ArSO2–CR1=C=CR2R3) and (arylsulfinyl)allenes (ArSO–CR1=C=CR2R3) undergo cyclization into the corresponding stable 1,2-oxathiolium ions, which were studied by means of NMR an
Externí odkaz:
https://doaj.org/article/44520c75deb34346aa46da5a5eb7a682
Autor:
Anna S. Zalivatskaya, Dmitry S. Ryabukhin, Marina V. Tarasenko, Alexander Yu. Ivanov, Irina A. Boyarskaya, Elena V. Grinenko, Ludmila V. Osetrova, Eugeniy R. Kofanov, Aleksander V. Vasilyev
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 13, Iss 1, Pp 883-894 (2017)
The metal-free reaction of 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles with arenes in neat triflic acid (TfOH, CF3SO3H), both under thermal and microwave conditions, leads to 5-(2,2-diarylethyl)-3-aryl-1,2,4-oxadiazoles. The products are formed throug
Externí odkaz:
https://doaj.org/article/d92cbb67843b4985b3c5af07f741d52c