... A (3), and permethyl storniamide A (5) are detailed on the basis of a common heterocyclic azadiene Diels ... Deprotection of the MOM ethers through treatment of 10 with 3 M HCl−EtOAc afforded a mixture of ... allowed to react with 1,2,4,5-tetrazine 6 to give the desired 1,2-diazine 16 ...