For the very first time furo[3,2-c]pyrazoles have been prepared starting from pyrazole building blocks instead from furanes. During this synthesis effort two previously unknown heterocyclic scaffolds have been discovered, the furo[3,2-c]pyrazol-6-ones and the 2-cyano-3-aminofuran-4-ones.

中文翻译：

---

呋喃并[3,2 - c ]吡唑-6-酮的首次合成和进一步衍生化

首次从吡唑结构单元而不是呋喃制备呋喃[3,2- c ]吡唑。在该合成过程中，已经发现了两个先前未知的杂环支架，即呋喃并[3,2 - c ]吡唑-6-和2-氰基-3-氨基呋喃-4--。