A series of N-substituted bridgehead azabicycloalkanes has been prepared and examined as substrates for microbiological oxygenation using the fungi Beauveria bassiana, Rhizopus nigricans, Aspergillus ochraceus, and Rhizopus arrhizus. Oxygenation using B. bassiana of N-tosyl-7-azabicyclo[2.2.1]heptane gave N-[p-(hydroxymethyl)benzenesulfonyl]-7-azabicyclo[2.2.1]heptane (56% yield), of N-(phenyloxyc
已经制备了一系列N-取代的桥头
氮杂双环烷烃,并使用真菌球孢白僵菌,黑根霉,黑曲霉和无根根霉作为微
生物氧合的底物进行了检测。使用B. bassiana对N-
甲苯磺酰基-
7-氮杂双环[2.2.1]庚烷进行氧化,得到N- [对-(羟甲基)苯磺酰基] -
7-氮杂双环[2.2.1]庚烷(56%收率)。苯氧基羰基)-
7-氮杂双环[2.2.1]庚烷给出了2-内醇(56%收率,51%ee),N-BOC-
7-氮杂双环[2.2.1]庚烷得到了2-内醇N-Cbz-
7-氮杂双环[2.2.1]庚烷的收率(10%)为2-endo-ol(28%),N-(苯氧羰基)-8-氮杂
双环[3.2.1]辛烷的2-内醇(28%)。 3-内醇和N-(苯氧羰基)-
9-氮杂双环[3.3.1]壬烷的3-内醇得到了3-外醇(30%)和3-一(16%)。使用N-BOC-7-
氮杂双环[R. nigricans]进行氧合。1]
庚烷得到2-内-醇(6