Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Manuel A. Ramos-Enríquez"'
Autor:
Nathalie Saffon-Merceron, Ekaterina V. Bellan, Shintaro Takahashi, Antoine Baceiredo, Norio Nakata, Manuel A. Ramos-Enríquez, Tsuyoshi Kato, Vicenç Branchadell, Daisuke Hashizume
Publikováno v:
Angewandte Chemie International Edition
Angewandte Chemie International Edition, Wiley-VCH Verlag, 2021, 60 (34), pp.18489-18493. ⟨10.1002/anie.202105526⟩
Angewandte Chemie International Edition, Wiley-VCH Verlag, 2021, 60 (34), pp.18489-18493. ⟨10.1002/anie.202105526⟩
A novel stable donor/acceptor-supported MnI -metallasilanone 3 was synthesized. The intramolecular silanone-MnI interaction induces a highly strained three-membered cyclic structure, leading to an exceptionally high reactivity of 3 as a donor/accepto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7d247bb947a1a9968c0865715243bcf
https://doi.org/10.1002/ange.202105526
https://doi.org/10.1002/ange.202105526
Autor:
Marcos Flores-Alamo, Braulio Rodríguez-Molina, Manuel A. Ramos-Enríquez, Martín A. Iglesias-Arteaga, Abraham Colin-Molina
Publikováno v:
Crystal Growth & Design. 20:6649-6659
[23(23E,25R]-23(28)-(3′-Acetoxybenzyliden)-5α-spirostan-3β-ol acetate herein described showed a high tendency to crystallize, growing two solvent-free forms and six solvates that were solved by X-r...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::263a6ea5ff44e5184a8e72f064719ac2
https://doi.org/10.1021/acs.cgd.0c00808
https://doi.org/10.1021/acs.cgd.0c00808
Autor:
Manuel A. Ramos-Enríquez, Omar N. Medina-Campos, José Pedraza-Chaverri, Marcos Flores-Álamo, Martín A. Iglesias-Arteaga
Publikováno v:
Steroids. 188:109110
23E-diacetoxybenzylidenespirostanes underwent rearrangement when treated with HCl in CH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3daa5e3fbf977f5ba5909aa18e3d4694
https://doi.org/10.1016/j.steroids.2022.109110
https://doi.org/10.1016/j.steroids.2022.109110
Publikováno v:
Steroids. 128:46-49
BF3·Et2O-catalyzed aldol condensation of steroid sapogenins with 2-formyl-estradiol diacetate afforded two novel classes of steroid dimers in which an estrogenic core is attached to the spirostanic side chain of an steroid sapogenin through an exocy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cb87b544a54bb925e92c3121a8d08d0
https://doi.org/10.1016/j.steroids.2017.10.008
https://doi.org/10.1016/j.steroids.2017.10.008
Autor:
Katherine Vargas-Romero, Miroslav Strnad, Lucie Rárová, Manuel A. Ramos-Enríquez, Martín A. Iglesias-Arteaga
Publikováno v:
Steroids. 128:85-88
Benzylidenespirostanols were prepared by two-step synthesis including BF3·Et2O-catalyzed aldol condensation of several acetylated steroid sapogenins with benzaldehyde followed by saponification. The obtained compounds showed moderate cytotoxicity ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de04e858e526892fc7db38de0fcc92db
https://doi.org/10.1016/j.steroids.2017.08.017
https://doi.org/10.1016/j.steroids.2017.08.017
An unexpected BF3·Et2O-catalyzed rearrangement of 23E-benzylidenespirostanes to spiro[furan-indenes]
Publikováno v:
Tetrahedron Letters. 57:2249-2252
Treatment of 23E-benzylidenespirostanes with BF3·Et2O in 2/1 acetic acid/CH2Cl2 led to novel steroids bearing a spiro[furan-indene] moiety in the side chain. When steroid sapogenins were treated with benzaldehyde and BF3·Et2O in the same mixture of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb1939dc36983f8d7c3e17aeb2cabc25
https://doi.org/10.1016/j.tetlet.2016.04.032
https://doi.org/10.1016/j.tetlet.2016.04.032
Autor:
Manuel A. Ramos-Enríquez, José Pedraza-Chaverri, Martín A. Iglesias-Arteaga, Omar Noel Medina-Campos
Publikováno v:
Steroids. 98:132-137
Tandem aldol condensation between steroid sapogenins and hydroxylated benzaldehydes afforded steroidal spirochromenes. Compounds that bear a phenolic hydroxyl group at position C-6′, obtained by a reaction with 2,5-dihydroxybenzaldehyde, showed app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::888185ea0e3c438493920992bd3a55c8
https://doi.org/10.1016/j.steroids.2015.03.013
https://doi.org/10.1016/j.steroids.2015.03.013
Publikováno v:
Steroids. 128
BF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e4d19e80d6098f62b702c68e7e1aad4d
https://pubmed.ncbi.nlm.nih.gov/29066328
https://pubmed.ncbi.nlm.nih.gov/29066328
Publikováno v:
Steroids. 151:108462
A study of the reactivity of 25R and 25S 23E-benzylidene spirostanes that includes epoxidation, catalytic hydrogenation as well as Lewis or Bronsted acid-catalyzed rearrangements is described. Exhaustive NMR characterization of the obtained compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ab824cb49960801416a6a77cfbd813f
https://doi.org/10.1016/j.steroids.2019.108462
https://doi.org/10.1016/j.steroids.2019.108462
Autor:
Manuel A. Ramos-Enríquez, Margarita Romero-Ávila, Marcos Flores-Alamo, Martín A. Iglesias-Arteaga
Publikováno v:
Tetrahedron Letters. 54:4401-4405
Treatment of 25R and 25S-23E-benzylidenespirostanes with NaBH 3 CN in acetic acid produced thehydride addition at either C-23 (normal course) or C-23 0 (abnormal course) leading to 23E-benzylidenefu-rostanes and 23R-benzylspirostanes. In the case of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31108a62733c35494a17f8e7bfd50ad9
https://doi.org/10.1016/j.tetlet.2013.06.011
https://doi.org/10.1016/j.tetlet.2013.06.011