Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Robert Dr. Klein"'
Publikováno v:
Tetrahedron. 51:8247-8258
The stereoselective synthesis of both enantiomeric forms of 3-alkyl-streptenols A 7–9 and bient-7–9 in four steps is described. Hereby, the stereoselective acetalization to the pyrans 2a and 2b directed by the solvent and the catalyst used was a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::203e5e34cb9bf353d2dc0edf569f86d1
https://doi.org/10.1016/0040-4020(95)00438-e
https://doi.org/10.1016/0040-4020(95)00438-e
Publikováno v:
ChemInform. 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75ccb98c471e69edbd6b1a979dedff0b
https://doi.org/10.1002/chin.199548150
https://doi.org/10.1002/chin.199548150
Publikováno v:
Journal of medicinal chemistry. 35(5)
The synthesis and the biological activity of C-1-reduced nigericin derivatives (nigericinols) are described and discussed. The dichloronigericinol 7 impressively demonstrated that the C-1 carboxylic acid moiety was not required for a distinct activit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08385d203b7866a56348c1cbd28d0437
https://pubmed.ncbi.nlm.nih.gov/1312603
https://pubmed.ncbi.nlm.nih.gov/1312603
Autor:
Klaus Kjulajn, Robert Dr. Klein, Christian Kohlpaintner, Spaleck Walter Dr, Aulbach Michael Dr, Frank Kjuber, Bachmann Bernd Dr, Andreas Dr. Winter
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 125:170
The invention relates to a metallocene compound of the formula I ##STR1## where the two indenyl ligands have substitution patterns different from one another. The metallocene compound can be used as catalyst component for olefin polymerization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fdb5be1ed357cc514da4c298a52ce32
https://doi.org/10.1016/s1381-1169(98)80074-5
https://doi.org/10.1016/s1381-1169(98)80074-5
Autor:
Gerhard Kretzschmar, Peter Dr. Hammann, Frank Ditzel, Wolfgang Raether, Achim Kröger, Mária Kajtár-Peredy, Robert Dr Klein
Publikováno v:
HETEROCYCLES. 32:1471
The synthesis of the polyether subunits (8-11), starting from elaiophylin (1), as well as their biological properties, nmr spectra and conformational studies were described and discussed. Based upon the missing ability of potassium transport it was d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c069f2a76e7c49acad376a8f1d758c4
https://doi.org/10.3987/com-91-5778
https://doi.org/10.3987/com-91-5778
Publikováno v:
HETEROCYCLES. 31:1907
A reversible blocking of the C-29 hemiacetal in nigericin (1) was performed with LiBr in methanol to the acetal (6). Conversion of the carboxylic acid to the C-1 alcohol (7) and the ketone (9) and the subsequent deprotection yielded 8 and 10, respect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31aa7041d4553eafbcb48447a0a6382c
https://doi.org/10.3987/com-90-5555
https://doi.org/10.3987/com-90-5555