English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The title compound, C 9 H 12 O 5 , is a bicyclic lactone, presenting a 2,6-dioxabi­cyclo­[3.3.0]octan-3-one skeleton, which was obtained through an intra­molecular lactonization. The bicyclic lactone presents a  cis  ring-junction and a 1,5- trans -substituted tetra­hydro­furan. Both five-membered rings are in twisted envelope conformations with one of the fused C atoms as the flap. The dihedral angle between the mean planes of the bicyclic lactone residue, defined by the di­hydro­furan-2(3 H )-one and the tetra­hydro­furan rings, is 69.5 (2)°. The atoms of the ester chain are coplanar [maximum deviation = 0.013 (2) Å]. The absolute structure was not determined.

[(2S,3aR,6aR)-5-Oxohexahydrofuro[3,2-b]furan-2-yl]methyl acetate