178977-40-7

Basic information

• Product Name: (R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionic acid
• CAS NO: 178977-40-7
• Molecular Weight: 380.441
• Mol File: 178977-40-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: (R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionic acid(CAS DataBase Reference)
• NIST Chemistry Reference: (R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionic acid(178977-40-7)
• EPA Substance Registry System: (R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionic acid(178977-40-7)

Safety Data

• Hazardous Substances Data: 178977-40-7(Hazardous Substances Data)

Upstream product

• 2140-95-6 (R)-3-amino-2-methylpropanoic acid 
• 68856-96-2 N-(tert-butoxycarbonyl)-O-methyl-D-tyrosine 

Downstream Products

• 179093-49-3 (S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid 
• 155645-51-5 Cryptophycin 4 
• 179093-51-7 (E)-(S)-5-((S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoyloxy)-6-oxo-8-phenyl-oct-2-en-7-ynoic acid tert-butyl ester 
• 179093-52-8 (E)-(S)-5-((S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoyloxy)-6-oxo-8-phenyl-oct-2-en-7-ynoic acid tert-butyl ester 
• 179093-50-6 (S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid 

Relevant articles and documents

Total synthesis of cryptophycins and their 16-(3-phenylacryloyl) derivatives

Cryptophycin A, a cyclic depsipeptide isolated from the blue-green alga (cyanobacterium) Nostoc sp.GSV 224, has shown excellent activity against solid tumors implanted in mice. The benzylic epoxide, which was shown to be very important for biological activity, is also fairly unstable under both acidic and alkaline conditions. The high doses needed to observe in vivo activity might be a result of this instability. In order to solve this problem while preserving the electrophilic character of the benzylic position, enones 1 and 2 have been proposed as promising analogs of the natural product, and a convergent total synthesis of these compounds is described. In addition, the same strategy was used to prepare Cryptophycins A,B, C, and D.