The synthesis and assignment of configuration of some 23-substituted cholanic acid derivatives
β Scribed by S. Sarel; Y. Yanuka; R. Katz; B.A. Weissman; Yona Stein
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- French
- Weight
- 198 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
In toluene as solvent, the azidoalcohol was formed [lza]. HELVETICA CHIMICA ACTA Scheme 1 Vo1. 73 (1990) 1907 Oxidation of the 13a -hydroxy derivatives 15A and 15D with PDC in DMF afforded the ketones 14A and 14D in good yield [6b].
## Abstract The utility of diazinyl substituted carbodiimides (**1aβc**) for the synthesis of novel guanidines (**2**), isothioureas (**3**), and isoureas (**4**) is shown. Attempts to determine the stereochemistry of the target compounds using NOE difference spectroscopy or Xβray analysis, respect