817210-65-4Relevant articles and documents
NOVEL CYCLOPENTANE DERIVATIVES
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Page/Page column 40-41, (2010/12/29)
The invention relates to a compound of formula (I) wherein A1 and R1 to R5 are defined as in the description and in the claims. The compound of formula (I) can be used as a medicament.
Chiral base route to functionalised cyclopentenyl amines: Formal synthesis of the cyclopentene core of nucleoside Q
Oxenford, Sally J.,O'Brien, Peter,Shipton, Mark R.
, p. 9053 - 9055 (2007/10/03)
A chiral base route to a range of highly functionalised amino cyclopentenes has been developed. The key asymmetric step involved the chiral lithium amide base-mediated rearrangement of a protected trans-4-hydroxy cyclopentene oxide to give an allylic alcohol (88% ee). Subsequent Overman rearrangement gave a protected trans-1,2-aminocyclopentenol whereas Mitsunobu substitution with BocNHNs gave a protected cis-amino cyclopentenol. Both are proven intermediates for natural product synthesis. The protected cis-aminocyclopentenol was transformed in a few steps into a precursor of the cyclopentene core of nucleoside Q, a natural product whose deficiency in animals is related to tumour growth.