An Efficient Stereoselective Synthesis of (2S,4S,5R)-(-)- and (2R,4R,5S)-(+)-Bulgecinine.
✍ Scribed by Subhash P. Chavan; Cherukupally Praveen; Pallavi Sharma; U. R. Kalkote
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 9 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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The condensation of (1 R,2S) or (lS,2S)-N,N'-dimethyI-l-phenylpropane-l 2-diamines with aldehydes gives respectively two diastereorneric 2-alkyl-l,3,4-trimethyI-S-phen limidazolidines. At thermodynamical equilibrium the major isomer in the erythro series is this one where t f ! e substituents at pos
## Abstract 1,4,5,8,9,16‐Hexahydroxytetraphenylene (**5**) was synthesized by an iodobenzene diacetate‐mediated phenolic oxidation. Enantiopure forms of 1,4,5,8,9,16‐hexahydroxytetraphenylenes [(__S__,__R__,__S__)‐**5** and (__R__,__S__,__R__)] were successfully synthesized either by using (__S__,_