The First Asymmetric Synthesis of the Naturally Occurring (+)-Kotanin and the Assignment of Its Absolute Configuration. -The key steps in the synthesis of the title compound (IX) are cyclization of the dibromide (II) and Fries rearrangement of the diacetate derived from the diol (IV). The absolute
The first asymmetric synthesis of the naturally occurring (+)-Kotanin and the assignment of its absolute configuration
β Scribed by Guo-Qiang Lin; Min Zhong
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 241 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0957-4166
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β¦ Synopsis
The first asymmetric synthesis of the naturally occurring (+)-Kotanin is described. The key steps involve the intramolecular oxidative coupling of the cyanocuprate intermediate and the Fries rearrangement. The absolute configuration of (+)-Kotanin was assigned as aS by CD spectroscopic method. (~) 1997
π SIMILAR VOLUMES
The first asymmetric total synthesis of a new coccinellid alkaloid (-)-adalinine has been achieved, based on the construction of a 2-piperidone framework with an asymmetric quaternary center at the C-6 position, which was performed by Lewis acid-induced allylation of the cyclic N-acyl-N,O-acetal inc