## Abstract __Zusammenfassung__. Im Rahmen der vorliegenden Mitteilung berichten wir über den partial‐synthetischen Aufbau von 3‐Oxo‐17 β‐acetoxy‐14α‐methyl‐Δ^4^‐8α, 9β, 10α, 13α‐östren (**12**), dessen Struktur anschliessend mittels dreidimensionaler Röntgenanalyse [2] sichergestellt worden ist. A
The Crystal and Molecular Structure of 3-Oxo-17β-acetoxy-Δ4-14α-methyl-8α, 9β, 10α, 13α-estrene
✍ Scribed by Gunji Koyama
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- German
- Weight
- 331 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
CH,(18) + 14-CH3; 2.07, s CH,( 4) (CDCI,);not yet crystalli~ed]~). Finally, 8 was converted by catalytic hydrogenation [5%-Pd/C in ethanol/triethylamine; + 11 and cyclisation [HCl in acetic acid] into 3-oxo-17~-acetoxy-14a-methyl-A4-8a,9B,lOa,13a-estrene (12) [m.p. 86-88'; -[ U ] D = + 1' (CHC1,).
📜 SIMILAR VOLUMES
HE ANDROGENIC steroids most effective in T the treatment of metastatic breast cancer have all been potent androgens. T o date, the less potent androgens have been less effective.3~4 Hence, when an androgen more potent than testosterone or methyltestosterone became available it was thought important
## 9. VIII.93) Nucleophilic substitution of 6p-chloro-7,8-didehydro-4,5~ -epoxy-3-methoxy-17-rnethylmorphinan (1) and 8a -brom0-6,7-didehydro-4,5~ -epoxy-3-methoxy-17-methylmorphinan (2) with lithium cyano(methy1)-and (aryl)cyanocuprates(I) (5a-c) was accompanied by allylic rearrangement with both
## Crystal and Molecular Structures of Modified Progestagens (IV). 17a-Azidomethyl-17@-hydroxy-estra-4,9-dien-3-on~, Cl&lehNsOe The crystal and molecular structure of 17a-azidomethyl-17b-hydroxy-estre-4,9-dien-3-one has been determined by X-ray structure analysis. It crystallizes in the orthorhor