Processes for preparing racemic and optically pure 3,6-dihydro-2H-pyrans of formulae H, I, N and O are described. These compounds may be further transformed into compounds of formulae J, K, L, M, P, Q, S, T, U, V, Y and Z with potential pharmaceutical, pharmaceutical excipient, cosmeceutical, agrochemical and industrial applications.
本文描述了制备式H、I、N和O的外消旋和光学纯3,6-二氢-
2H-吡喃的过程。这些化合物可以进一步转化为式J、K、L、M、P、Q、S、T、U、V、Y和Z的化合物,具有潜在的药物、
药用辅料、化妆品、农业
化学品和工业应用。