Fig. 4: Synthetic applications. | Nature Communications

Fig. 4: Synthetic applications.

From: Site-selective C-H hydroxylation of pentacyclic triterpenoids directed by transient chiral pyridine-imino groups

Fig. 4

Expeditious synthesis of Saikosaponin E (1), Albizia saponin 2, and Kochianoside I (3). BAIB (diacetoxyiodo)benzene, Bn benzyl, DBU 1,8-diazabicyclo[5.4.0]undec-7-ene, DMAP 4-dimethylaminopyridine, DMF N,N-dimethylformamide, DMP Dess-Martin periodinane, EDA ethylenediamine, LAH lithium aluminum hydride, MS molecular sieves, NBS N-bromosuccinimide, NIS N-iodosuccinimide, Phth phthaloyl, TBAF tetrabutylammonium fluoride, TEMPO 2,2,6,6-tetramethylpiperidinooxy, THF tetrahydrofuran, TMS trimethylsilyl.

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