Structural Diversity from the Transannular Cyclizations of Natural Germacrone and Epoxy Derivatives: A Theoretical-Experimental Study
作者:M. Carmen Pérez Morales、Julieta V. Catalán、Victoriano Domingo、Martín Jaraíz、M. Mar Herrador、José F. Quílez del Moral、José-Luis López-Pérez、Alejandro F. Barrero
DOI:10.1002/chem.201300662
日期:2013.5.17
Treatment of germacrone (1) with different electrophiles, and of its epoxy derivatives germacrone‐4,5‐epoxide (2), germacrone‐1,10‐epoxide (3) and isogermacrone‐4,5‐epoxide (4) with Brönsted/Lewis acids and TiIII, gives rise to a great structural diversity. Thus, by using a maximum of two steps, the production of more than 40 compounds corresponding to 14 skeletons is described. Computational calculations
吉马酮(处理1)与不同的亲电子的,其环氧衍生物的吉马酮-4,5-环氧化物(2),吉马酮-1,10-环氧化物(3)和isogermacrone -4,5-环氧化物(4)配有布朗斯台德/路易斯酸和Ti III产生很大的结构多样性。因此,通过最多使用两个步骤,描述了对应于14个骨架的40多种化合物的生产。还描述了合理化所产生结构差异的计算计算。最后,由于生成的某些化合物是具有生物活性的天然倍半萜烯,因此这些物质的形成机理将为其生物合成提供新的见解。