Desymmetrization of cyclic anhydrides using dihydroxy compounds: Selective synthesis of macrocyclic tetralactones

Organic Letters

Volumn 8, Issue 9, 2006, Pages 1913-1916

  Muthusamy, Sengodagounder ^a   Gnanaprakasam, Boopathy ^a   Suresh, Eringathodi ^a  

^a CSIR CENTRAL SALT AND MARINE CHEMICALS RESEARCH INSTITUTE   (India)

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[No Author keywords available]

Indexed keywords

EID: 33646460412     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol060509k     Document Type: Article

References (24)

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23. 2 using SHELXL-97 software.
24. The data collection was carried out at 100 K using liquid nitrogen and the extensive dynamic disorder observed in one of the bridging aliphatic chains with the cyclohexene rings during structure solution. Thus, carbon atoms C19, C20, C21, C22 and oxygen atoms O5, O6 of the chain are disordered along with one carbon atom C17 of the cyclohexene ring. The occupancy factors for these disordered atoms were fixed using FVAR from the SHELXTL (Sheldrick, G. M. SHELXTL, version 5.10, Bruker AXS, Madison, WI, 1997) program; all of the disordered atoms were refined only isotropically. Hydrogen atoms were fixed at geometrical positions for all of the non-hydrogen atoms refined anisotropically and not for the disordered atoms.