Photosensitized oxidation
of suberosin yielded suberenol (2), isosuberenol (6) and, under certain conditions,
6,6'-ethylenebis(7- methoxy-2H-1-benzopyran-2-one). The epoxy alcohol (7a), its
methyl ether and the aldehyde (3) were also obtained, but these are believed to
be artefacts formed under the conditions of workup. Autoxidation of suberosin does
not appear to occur readily. Other oxygenated derivatives of suberosin were
prepared by chemical methods. ���
Dehydration of suberenol and isosuberenol
yielded the diene (5) which on treatment with acid gave in low yield a
bis-coumarin, isomeric with cyclobisuberodiene, for
which structure (24) is suggested.
光敏氧化
在一定条件下,通过光敏氧化亚贝壳苷可得到亚贝壳苷醇(2)、异贝壳苷醇(6)以及
6,6'-
乙烯双(7-甲氧基-2H-1-苯并
吡喃-2-酮)。环氧醇(7a)、其
还得到了环氧醇 (7a)、其
甲醚和醛(3),但据信这些都是在制备过程中形成的人工产物。
但这些被认为是在加工条件下形成的人工产物。次
龙脑酶的自氧化
似乎不易发生。用
化学方法制备了其它含氧的
松脂苷衍
生物。
化学方法制备。���
将次庚烯醇和异异庚烯醇脱
水
脱
水后得到二烯(5)。
双
香豆素,它与环双
倍半萜二烯是同分异构体。
结构 (24)。