Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Hans-Rudolf Schlatter"'
Publikováno v:
Helvetica Chimica Acta. 58:1120-1130
Three different procedures for intramolecular alkoxy-alkylation of 19-hydroxy-testosterone-acetate (4) are described each yielding a mixture of two products monoalkylated either at position C(2), C(4) or C(6). In all cases the alkoxy groups are intro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f579773a7e9a53d12d7211a9a9346869
https://doi.org/10.1002/hlca.19750580415
https://doi.org/10.1002/hlca.19750580415
Publikováno v:
Helvetica Chimica Acta. 57:1055-1059
The chiroptical properties of the C(5)-epimeric 4,4-dimethyl-steroidderivatives 6, 7 and 8, recently prepared [1], are reported.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d16492f774ee3545d958aa4447eeb8f
https://doi.org/10.1002/hlca.19740570412
https://doi.org/10.1002/hlca.19740570412
Autor:
Walter Graf, Hans-Rudolf Schlatter
Publikováno v:
Helvetica Chimica Acta. 63:1554-1561
On the Stereochemistry of the C(8)-Alkylation of 7-Oxo-13,17-secosteroids It is shown that the title compounds, e.g.10, can be alkylated with methyl iodide under strongly basic conditions to afford 8α-methylated products, e.g.11(Scheme 1). The confi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fee528b782bed3c511d2b5dfa23bad3f
https://doi.org/10.1002/hlca.19800630624
https://doi.org/10.1002/hlca.19800630624
Publikováno v:
Helvetica Chimica Acta. 57:1044-1055
Starting from 19-hydroxytestosteroneacetate (1) a high yield preparation of 3-oxo-4,4-dimethyl-19-hydroxy-5α-steroids (e.g.7, 9, 13 and 33) is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ae27c278ec6032a8851bcd2a86bde42
https://doi.org/10.1002/hlca.19740570411
https://doi.org/10.1002/hlca.19740570411
Publikováno v:
Helvetica Chimica Acta. 58:1339-1345
Applying the HgCl2/ClCH2SCH3-reaction 1. to 4,4-dimethyl-Δ5-7-oxo-19-hydroxy-androstene (9) one observes an intramolecular rearrangement of the «Westphalen-Lettre»-type (11). A related rearrangement is observed by treating 3-oxo-4,4-dimethyl-17β-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c65856c322212db2c713e1966c86a804
https://doi.org/10.1002/hlca.19750580512
https://doi.org/10.1002/hlca.19750580512
Publikováno v:
Helvetica Chimica Acta. 57:1060-1066
Two different synthetic approaches towards compound 16 with the ring A/A'-partial structure of limonin (1) are described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccd53c59c7a98cbdac7b63e8c0df56fc
https://doi.org/10.1002/hlca.19740570413
https://doi.org/10.1002/hlca.19740570413
Publikováno v:
Chemischer Informationsdienst. 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::304a8bfc44b0aafa2609a48d2144102c
https://doi.org/10.1002/chin.197539380
https://doi.org/10.1002/chin.197539380
Publikováno v:
Chemischer Informationsdienst. 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc38def6959826aed083155abb406728
https://doi.org/10.1002/chin.197435410
https://doi.org/10.1002/chin.197435410
Publikováno v:
Chemischer Informationsdienst. 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c832d530d1ae65478d0f50fbdbd4cf4
https://doi.org/10.1002/chin.197534361
https://doi.org/10.1002/chin.197534361
Publikováno v:
Chemischer Informationsdienst. 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d78f49023355e9f9cc8a19642e790e1f
https://doi.org/10.1002/chin.197435051
https://doi.org/10.1002/chin.197435051