Zobrazeno 1 - 10
of 21
pro vyhledávání: '"René Borer"'
Publikováno v:
ChemInform. 21
Les substitutions nucleophiles des chromannes du titre avec le [cyano trimethyl] silane sont etudiees. Le catalyseur, TiCl 4 ou SnCl 4 , a une influence sur la regioselectivite des reactions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68b947b1c13d77ee33c71fbd561ed2ec
https://doi.org/10.1002/chin.199001191
https://doi.org/10.1002/chin.199001191
Publikováno v:
Helvetica Chimica Acta. 58:185-189
The oxidation product obtained by treatment of bulbocapnine methyl ether (2a) with iodine in ethanol/water is not the tetradehydroaporphinium salt 4 as assigned by Gadamer & Kuntze, but a dimer of structure 3. Reduction of 3 with zinc in dilute sulfu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d06e793fae883fccc614384041ee5c9a
https://doi.org/10.1002/hlca.19750580124
https://doi.org/10.1002/hlca.19750580124
Publikováno v:
Helvetica Chimica Acta. 62:1543-1548
(6aR)-1,2-(Methylenedioxy)aporphine-10, 11-diol (8) and (6aR)-aporphine-1, 1, 10, 11-tetrol (16) have been prepared from natural (S)-bulbocapnine (4). For both compounds, the partial synthesis included racemic intermediates which have been resolved i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11ad1f7728fd36c8ba2b78e9c15002df
https://doi.org/10.1002/hlca.19790620519
https://doi.org/10.1002/hlca.19790620519
Publikováno v:
The Journal of Organic Chemistry. 54:3282-3292
Les substitutions nucleophiles des chromannes du titre avec le [cyano trimethyl] silane sont etudiees. Le catalyseur, TiCl 4 ou SnCl 4 , a une influence sur la regioselectivite des reactions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bddd611e267c97c0001b4f0639e503d
https://doi.org/10.1021/jo00275a010
https://doi.org/10.1021/jo00275a010
Publikováno v:
Helvetica Chimica Acta. 59:2551-2557
Bulbocapnine methyl ether (2), on treatment with boron halides, affords the aporphine-1,2-diol (3), the novel aporphines 5 and 6 or the phenanthrene derivative 11 depending on the reaction conditions. 3 can be further transformed into corydine methyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::575092b86abb1e2bf98cb151bef70a0c
https://doi.org/10.1002/hlca.19760590731
https://doi.org/10.1002/hlca.19760590731
Publikováno v:
The Journal of Organic Chemistry. 43:1550-1555
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02eab672513981fd96783806b9cb1044
https://doi.org/10.1021/jo00402a015
https://doi.org/10.1021/jo00402a015
Autor:
Gabriel Saucy, René Borer
Publikováno v:
Helvetica Chimica Acta. 54:2121-2132
Based on the results obtained in the racemic series (part I), (—)-17β-hydroxy-des-A-androst-9-en-5-one has been synthesized, starting with (S)-(—)-5-heptanolide. The key step, viz. the condensation of (S)-(—)-7-hydroxy-1-nonen-3-one (or its am
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c812a418515b0fd2b4389147b8625ea1
https://doi.org/10.1002/hlca.19710540746
https://doi.org/10.1002/hlca.19710540746
Publikováno v:
Helvetica Chimica Acta. 54:2034-2042
In connection with earlier work on the synthesis of 9β, 10α-steroids, a new and practical synthesis of rac-17α-hydroxy-des-A-androst-9-en-5-one (19) has been developed, based on a novel stereoselective condensation of 7-hydroxy-1-nonen-3-one (3) w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdbe2e1a79be325af91794765daad380
https://doi.org/10.1002/hlca.19710540734
https://doi.org/10.1002/hlca.19710540734
Autor:
R. Mueller, Bruce L. Banner, Michael Rosenberger, Noal Cohen, René Borer, Gabriel Saucy, R. Yang
Publikováno v:
The Journal of Organic Chemistry. 37:3385-3392
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa0cee9728f045ea736a93f0984593ae
https://doi.org/10.1021/jo00795a001
https://doi.org/10.1021/jo00795a001
Autor:
René Borer, Gabriel Saucy
Publikováno v:
Helvetica Chimica Acta. 54:2517-2528
The total synthesis of 9β, 10α-testosterone via a BCD-tricyclic intermediate is described. The latter compound – 17β-hydroxy-des-A-androst-9-en-5-one – was obtained in optically active form by our previously reported scheme, using an efficient
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b639b7a66003006db6f7434c155b207
https://doi.org/10.1002/hlca.19710540815
https://doi.org/10.1002/hlca.19710540815