Disclosed herein are methods of making (4aR,6S,8aR)-6-((R)-1-hydroxyethyl)-6,8a-dihydropyrano[3,2-b]pyran-2-(4aH)-one (2) and methods of making (4aR,6S,8aR)-6-cyano-6,8a-dihydropyrano-[3,2-b]pyran-2(4aH)-one (4). Other pyranopyrans were also synthesized. Also compositions containing (4aR,6S,8aR)-6-cyano-6,8a-dihydropyrano-[3,2-b]pyran-2(4aH)-one (4) (or other pyranopyrans described herein) and optionally a carrier. In addition, methods for killing microorganisms or weeds on or in an object or area involving contacting the object or area with an effective microorganisms or weeds killing amount of a composition containing (4aR,6S,8aR)-6-cyano-6,8a-dihydropyrano-[3,2-b]pyran-2(4aH)-one (4) (or other pyranopyrans described herein) and optionally a carrier.
本文公开了制造(4aR,6S,8aR)-6-((R)-1-羟乙基)-6,8a-二氢
吡喃并[3,2-b]
吡喃-2-(4aH)-酮(2)的方法和制造(4aR,6S,8aR)-6-
氰基-6,8a-二氢
吡喃并[3,2-b]
吡喃-2(4aH)-酮(4)的方法。还合成了其他
吡喃并
吡喃。还包含(4aR,6S,8aR)-6-
氰基-6,8a-二氢
吡喃-并[3,2-b]
吡喃-2(4aH)-酮(4)(或本文所述的其他
吡喃并
吡喃)和可选载体的组合物。此外,杀灭物体或区域上或区域内的微
生物或杂草的方法,包括用含有(4aR,6S,8aR)-6-
氰基-6,8a-二氢
吡喃并[3,2-b]
吡喃-2(4aH)-酮(4)(或本文所述的其他
吡喃酮)和任选载体的组合物的有效微
生物或杂草杀灭量接触物体或区域。