Total synthesis of geralcin A, a representative of a new family of hydrazine-containing natural products
作者:Géraldine Le Goff、Emmanuel Roulland、Jamal Ouazzani
DOI:10.1016/j.tetlet.2013.07.087
日期:2013.9
The first total synthesis of geralcin A (2), a naturally occurring α,β-unsaturated γ-lactonohydrazide produced by Streptomyces sp. LMA-545, was achieved according to the hypothetical biosynthesis we have previously published. MH-031 (1), the plausible natural precursor isolated together with geralcin A, was synthesized in 6 steps and in a 25% overall yield. Condensation of glycolic acid with key intermediate
geralcin A(2)的第一个全过程合成,这是一种由链霉菌(Streptomyces sp)产生的自然存在的α , β-不饱和的γ-内酰肼。LMA-545是根据我们先前发表的假设生物合成方法获得的。MH-031(1)是与Geralcin A一起分离的似似的天然前体,可通过6个步骤合成,总收率为25%。乙醇酸与关键中间体Boc-己基肼的缩合以46%的总收率提供了所需的geralcinA。合成化合物的光谱数据与天然化合物的光谱数据相同。