Zobrazeno 1 - 10
of 21
pro vyhledávání: '"J. Trittmacher"'
Publikováno v:
ChemInform. 33
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c2e8e191c46273889a01bb4c226e691
https://doi.org/10.1002/chin.200248141
https://doi.org/10.1002/chin.200248141
Publikováno v:
Die Pharmazie. 60(8)
The o-nitrobenzylidene acetoacetic esters 1 dimerize in the presence of BuLi or LDA to give the cyclohexenes 2 in poor yield. Two diastereomer of 2b were isolated, whose configuration is deduced by nmr-spectroscopic methods.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c2168d2557a62c9fcb77522e521aec0d
https://pubmed.ncbi.nlm.nih.gov/16124397
https://pubmed.ncbi.nlm.nih.gov/16124397
Publikováno v:
Die Pharmazie. 60(7)
The reaction of the 1,5-diketones 1 with acetic anhydride/acetic acid in the presence of zinc chloride yields the 4-aryl-4H-pyrans 2 as main products. The annulated lactone 3 and the cyclohexene derivatives 5 are isolated as by-products. The configur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::aa6e1f1ce84bed26beee41d9f930f489
https://pubmed.ncbi.nlm.nih.gov/16076073
https://pubmed.ncbi.nlm.nih.gov/16076073
Publikováno v:
ChemInform. 35
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::927c30ae64e52fc038a5b18c8dec7ab5
https://doi.org/10.1002/chin.200409127
https://doi.org/10.1002/chin.200409127
Publikováno v:
Die Pharmazie. 58(11)
Hydrolysis of the dienamine function of the dihydrobiphenyls 3 leads to a mixture of the tautomers 4A-C (NMR). The structures of the starting material 3a and the products 4cA and 4bC are confirmed by X-ray crystal analysis. The biphenyls 5 are formed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b5ac4b1c37705b4908765c0fee5a9099
https://pubmed.ncbi.nlm.nih.gov/14664331
https://pubmed.ncbi.nlm.nih.gov/14664331
Publikováno v:
ChemInform. 34
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeca75b99e089b47ced876a90ea11e59
https://doi.org/10.1002/chin.200346159
https://doi.org/10.1002/chin.200346159
Publikováno v:
Die Pharmazie. 58(8)
Pyrano[3,4-c]quinolines from 1-desaza-1-oxa-nifedipine The reaction of the 1,5-diketone 1 with acetic anhydride/acetic acid in the presence of zinc chloride yields the 1-desaza-1-oxa-nifedipine 2 and the annulated lactone 3 as a by-product. The struc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f58be6ee85a8b9c92097d146133f9f7e
https://pubmed.ncbi.nlm.nih.gov/12967028
https://pubmed.ncbi.nlm.nih.gov/12967028
Publikováno v:
ChemInform. 34
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5caae6a744248b13d1e0a260b06c728
https://doi.org/10.1002/chin.200301143
https://doi.org/10.1002/chin.200301143
Publikováno v:
Die Pharmazie. 57(9)
The bistetronic derivatives 4, obtained by base catalyzed reaction of the aldehydes 3 with surplus tetronic acid (2), cyclize in polyphosphoric acid (PPA) to yield the 4H-pyranes 5. The amino derivative 6 formed by reduction of the nitro group of 5a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7bbb1663d58dac0188922177dfae083a
https://pubmed.ncbi.nlm.nih.gov/12369446
https://pubmed.ncbi.nlm.nih.gov/12369446
Publikováno v:
Die Pharmazie. 57(8)
Eight new 4-aryl-2,6-dimethyl-4H-pyrane-3,5-dicarboxylic acid esters 2 and a new 2-amino-2-nor derivative 7 are synthesized using known methods, whose limitations are shown. In contrast to the isoelectronic 4-aryl-1,4-dihydro-pyridines (DHP) 1 the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c2912ab3cb0103f61ba7facf34838d41
https://pubmed.ncbi.nlm.nih.gov/12227190
https://pubmed.ncbi.nlm.nih.gov/12227190