Class Id resinite from Canada: A new sub-class containing succinic acid

This paper describes a new sub-category of Class I resinites based on labdanoid diterpenes having an enantiomeric configuration, including ozic acid, ozol and enantio biformenes, and incorporating succinic acid. This hitherto unnamed resinite sub-class, now designated as Class Id, has been identified in three distinct deposits in Canada: two sites in Nunavut and one site in British Columbia. The composition of Class Id resinites was determined using pyrolysis-gas chromatography-mass spectrometry with in situ trimethylsilylation with hexamethyldisilazane, Py(HMDS)-GC-MS. Fourier transform infrared spectroscopy (FTIR) of the resinites was also carried out and provided evidence of partial esterification of the ozol with succinic acid. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.