Generation X: The various methods for the diversity-oriented synthesis of β-carboline derivatives through an exploration of Kumujian C and its analogues are highlighted and summarized, which provide an excellent alternative to the classical Pictet–Spengler approach.

中文翻译：

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1（3）-甲酰基-β-咔啉：合成基于β-咔啉的分子结构的潜在Aldo-X前体

X世代：通过对Kumujian C及其类似物的探索，提出了多种以多样性为导向合成β-咔啉衍生物的方法，这些方法为经典的Pictet-Spengler方法提供了极好的替代方法。