Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Brigitta Popp"'
Autor:
Hans Georg von Schnering, Brigitta Popp, Werner Tochtermann, Eva-Maria Peters, Karl Peters, Anne‐Katrin Mattauch
Publikováno v:
Chemische Berichte. 126:2547-2551
Syntheses of Medium and Large Rings, XXXIV[1,2]. – Stereoselective Synthesis of Bridged and Branched Methyl Deoxyfuranosides from Dimethyl 3,6-Hexanooxepine-4,5-dicarboxylate The stereoselective synthesis of the bridged methyl furanosides 4–8 wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c891ff0d7b75dd8afcf48c4b5ca1b8e6
https://doi.org/10.1002/cber.19931261133
https://doi.org/10.1002/cber.19931261133
Autor:
Norbert Sdunnus, Karl Peters, Hans Georg von Schnering, Eva-Maria Peters, Günther Snatzke, Brigitta Popp, Werner Tochtermann, Frank Ott, Ulrike Schlösser
Publikováno v:
Chemische Berichte. 126:1733-1742
Synthesis of Medium and Large Rings, XXXIII[1].–Optically Active 3a,6-Methanohydroazulenes via Chiral Induction of the Solid-State Photochemical Rearrangement of Bis(1,2:5,6-di-O-isopropylidene-α-D- and -α-L-glucofuranos-3-O-yl) 3,6-Hexanooxepine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fcbc205582b459230148cde431c2d62
https://doi.org/10.1002/cber.19931260733
https://doi.org/10.1002/cber.19931260733
Autor:
Karl Peters, Hans Georg von Schnering, Werner Tochtermann, F. Ott, Brigitta Popp, Eva-Maria Peters
Publikováno v:
Tetrahedron. 49:4581-4588
Epoxidation of the oxepine diester (−)-1a leads to the oxirane (+)-2a with (S,S) configuration in high yield. (+)-1b on the other hand gives the (1aR,6R)-oxirane (−)-2b. (+)-2a undergoes photochemical ring closure to give (+)-(S,S,S,S)-3a in 90%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d00e093216b9fc52a2723fe08dca3930
https://doi.org/10.1016/s0040-4020(01)81287-4
https://doi.org/10.1016/s0040-4020(01)81287-4
Publikováno v:
Tetrahedron: Asymmetry. 4:281-284
Optically active hydroazulenes have been synthesized by solid state photochemical rearrangement of the diester (−)- 1a and subsequent ring enlargement of the tosylhydrazone (+)- 2c . Oxidative cleavage of the double bond of (+)- 3 gives the trans-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b93ef2410b624f20a7d28a771a8ed8da
https://doi.org/10.1016/s0957-4166(00)86068-1
https://doi.org/10.1016/s0957-4166(00)86068-1
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92818eec11b26d1ca1d461889a51328e
https://doi.org/10.1002/chin.199341253
https://doi.org/10.1002/chin.199341253
Autor:
Norbert Sdunnus, Hans Georg von Schnering, Eva-Maria Peters, Werner Tochtermann, Brigitta Popp, Karl Peters, Frank D. Sönnichsen
Publikováno v:
Tetrahedron Letters. 33:8023-8026
The stereoselective synthesis of the methyl furanosides 5, 6 and 7, 8 with four and six stereogenic centers from the oxepines 2 and 3 is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e262885763f1d210716d08dc9fba5a3
https://doi.org/10.1016/s0040-4039(00)74707-1
https://doi.org/10.1016/s0040-4039(00)74707-1
Autor:
Ulrike Schlösser, Werner Tochtermann, Eva-Maria Peters, Hans Georg von Schnering, Karl Peters, Brigitta Popp
Publikováno v:
Tetrahedron Letters. 30:6855-6858
Irradiation of an aqueous suspension of the crystalline diester 1d affords the (+)-(3aS, 6R, 8aR)-methanohydroazulene 2d in 45% yield with 83% de. The absolute configurations were established via the X-ray structural analysis of the dimenthylester (+
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffda34c3d31aa5bc99b39acb777358a8
https://doi.org/10.1016/s0040-4039(01)93370-2
https://doi.org/10.1016/s0040-4039(01)93370-2