ChemInform Abstract: A Synthetic Approach to Neplanocin A (XIa) and Queuosine (XIb): Unusual Natural Nucleosides Containing Cyclopentenyl Rings.
ChemInform Abstract
By the procedures detailed in the scheme, the ester (I) is converted to the olefins (VI)′(yield not given) and (X), representing known synthetic precursors of the title compounds (XIa) and (XIb), respectively.