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. 2019 Aug 14;15:1945–1961. doi: 10.3762/bjoc.15.190

Scheme 7.

Scheme 7

Possible synthesis of d9-guaiazulene, d9-δ-elemene, d9-guaia-6,9-diene and d9-δ-selinene via germacrene C after administration of [6,6,6-2H3]-(±)-mevalonolactone (d3-MVL) to isolated exocarp of grape berries (Lemberger cultivar).