Sarkar, Souradip; Samanta, Rajarshi published the artcile< Weakly Coordinating tert-Amide-Assisted Ru(II)-Catalyzed Synthesis of Azacoumestans via Migratory Insertion of Quinoid Carbene: Application in the Total Synthesis of Isolamellarins>, HPLC of Formula: 23077-43-2, the main research area is azacoumestan preparation; diazonaphthoquinone indole migratory insertion cyclization ruthenium catalyst.
A weakly coordinating tert-amide-directed straightforward method was developed for the synthesis of azacoumestans, e.g., I, using the corresponding azaheterocycle derivatives II (R1 = H, Me, Bn, etc., R2 = H, Me, R3 = Cl, F, R4 = MeO, Br, Ph, etc.) and diazonaphthoquinones III (R5 = OH, R6 = Br, COMe, Ph, etc.) under cheap Ru(II)-catalyzed conditions. The reaction proceeds via migratory insertion of quinoid carbene and subsequent Bronsted acid-mediated cyclization. The optimized C2-selective method offered a wide scope of important azaheterocycles. Bioactive natural products like isolamellarins A and B were synthesized via the developed protocol. Preliminary mechanistic studies highlighted the probable mechanistic pathway.
Organic Letters published new progress about Alkaloids Role: SPN (Synthetic Preparation), PREP (Preparation) (isolamellarins). 23077-43-2 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, HPLC of Formula: 23077-43-2.
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles