205304-87-6

Upstream product

• 1200041-28-6 tubutyrosine hydrochloride 
• 1200041-21-9 methyl 2-{(1R,3R)-3-{[(butanoyloxy)methyl](N-{[(2R)-1-methylpiperidin-2-yl]carbonyl}-L-isoleucyl)amino}-4-methyl-1-[(triethylsilyl)oxy]pentyl}-1,3-thiazole-4-carboxylate 
• 1200041-15-1 methyl 2-{(1R,3R)-3-{[(2S,3S)-2-azido-3-methylpentanoyl][(butanoyloxy)methyl]amino}-4-methyl-1-[(triethylsilyl)oxy]pentyl}-1,3-thiazole-4-carboxylate 
• 921927-94-8 methyl 2-{(1R,3R)-3-{[(2S,3S)-2-azido-3-methylpentanoyl]amino}-4-methyl-1-[(triethylsilyl)oxy]pentyl}-1,3-thiazole-4-carboxylate 
• 921927-93-7 methyl 2-((1R,3R)-3-((2S,3S)-2-azido-3-methylpentanamido)-1-hydroxy-4-methylpentyl)thiazole-4-carboxylate 
• 1200041-11-7 tubutyrosine hydrochloride 
• 1200041-17-3 methyl 2-{(1R,3R)-3-{[(butanoyloxy)methyl](N-{[(2R)-1-methylpiperidin-2-yl]carbonyl}-L-isoleucyl)amino}-4-methyl-1-[(triethylsilyl)oxy]pentyl}-1,3-thiazole-4-carboxylate 
• 107-92-6 butyric acid 

Downstream Products

• 1058724-99-4 Tubulysin-B₂ 

Relevant academic research and scientific papers

Processes for preparing tubulysins

Tubulysins are a series of naturally occurring cytotoxic agents that are of interest as anticancer therapeutic agents. Processes and intermediates useful for preparing naturally occurring and non-naturally occurring tubulysins and analogs and derivatives

PROCESSES FOR PREPARING TUBULYSIN DERIVATIVES AND CONJUGATES THEREOF

The invention described herein pertains to processes for preparing tubulysin derivatives, conjugates of tubulysins, and intermediates therefore. In one illustrative embodiment of the invention, processes for derivatives or analogs of natural tubulysins including compounds of formula (T). In another embodiment, vitamin receptor binding conjugates of tubulysins are described. The processes include one or more steps described herein. In another embodiment, a process is described for preparing a compound of formula B, wherein R5 and R6 are as described in the various embodiments herein, such as each being independently selected from optionally substituted alkyl or optionally substituted cycloalkyl; and R8 is C1-C6 n-alkyl; wherein the process comprises the step of treating a compound of formula A with a silylating agent, such as triethylsilyl chloride, and a base, such as imidazole in an aprotic solvent.

Acid mediated formation of an N-acyliminium ion from tubulysins: A new methodology for the synthesis of natural tubulysins and their analogs

Tubuylsins are extremely potent cytotoxic agents which inhibit tubulin polymerization and lead to cell cycle arrest and apoptosis. Tubulysins have been isolated from fermentation mixtures and have been chemically synthesized; however, these efforts have b

First total synthesis of tubulysin B

[Chemical Equation Presented] The first total synthesis of tubulysin B is described. The aziridine route to tubuphenylalanine (Tup) of the tubulysin D/U-series could not be transferred to the synthesis of tubutyrosine (blue moiety). Therefore, tubutyrosin

TUBULYSINS AND PROCESSES FOR PREPARING

Processes are described for the preparation of tubulysins. The processes are useful for preparing predetermined mixtures of tubulysins, preparing single tubulysins from mixtures of tubulysins, and for converting one tubulysin into a different tubulysin. T