TY  - JOUR
A1  - Coy-Barrera, Ericsson D.
A1  - Cuca-Suarez, Luis E.
A1  - Sefkow, Michael
A1  - Schilde, Uwe
T1  - Cinerin C: a macrophyllin-type bicyclo[3.2.1]octane neolignan from Pleurothyrium cinereum (Lauraceae)
JF  - Acta crystallographica : Section C, Crystal structure communications
N2  - The structure of naturally-occurring cinerin C [systematic name: (7S,8R,3'R,4'S,5'R)-Delta(8')-4'-hydroxy-5,5',3'-trimethoxy-3,4-methylenedioxy-2',3',4',5'-tetrahydro-2'-oxo-7.3',8.5'-neolignan], isolated from the ethanol extract of leaves of Pleurothyrium cinereum (Lauraceae), has previously been established by NMR and HRMS spectroscopy, and its absolute configuration established by circular dichroism measurements. For the first time, its crystal strucure has now been established by single-crystal X-ray analysis, as the monohydrate, C22H26O7 center dot H2O. The bicyclooctane moiety comprises fused cyclopentane and cyclohexenone rings which are almost coplanar. An intermolecular O-H center dot center dot center dot O hydrogen bond links the 4'-OH and 5'-OCH3 groups along the c axis.
Y1  - 2012
U6  - https://doi.org/10.1107/S0108270112030946
SN  - 0108-2701
VL  - 68
IS  - 2
SP  - O320
EP  - +
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -