Amino Steroids - 12-Oxygenated Heteroconanine Derivatives. Preparation and Properties
✍ Scribed by G. van De Woude; M. Biesemans; L. van Hove
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 541 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0037-9646
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## Abstract The title amino steroids have been synthesized from hecogenine acetate 10. The known convenient route for the synthesis of conanine derivatives involving as the key step a Hofmann‐Loeffler cyclization in a 20a‐methylaminopregnane structure revealed successful in the present case where t
## Abstract Four dicarboxylic acids containing one preformed imide ring were prepared by condensation of trimellitic anhydride with α‐amino acids such as glycine, DL‐alanine, DL‐valine, and DL‐lcucinc. These diacids were subsequently directly polycondensated with various aromatic diamines using tri