https://pubs.rsc.org/en/content/articlelanding/2016/cc/c6cc01074a
Toward the stereochemical assignment and synthesis of hemicalide: DP4f GIAO-NMR analysis and...
Using the DP4f GIAO-NMR method, the stereochemistry of hemicalide was computationally analysed, resulting in a reassignment at C18 as supported by improved NMR...