Microcolin B

Modify Date: 2025-08-27 18:36:46

Microcolin B Structure
Microcolin B structure
Common Name Microcolin B
CAS Number 141205-32-5 Molecular Weight 731.962
Density 1.1±0.1 g/cm3 Boiling Point 835.9±65.0 °C at 760 mmHg
Molecular Formula C39H65N5O8 Melting Point N/A
MSDS N/A Flash Point 459.3±34.3 °C

 Use of Microcolin B


Microcolin B is an extremely potent unusual acylpeptide, proline-containing potent immunosuppressant. Microcolin B is isolated from blue-green alga Lyngbya majuscule[1].

 Names

Name [(2R,3S)-4-[[(2S)-2-[[(2R,4R)-2,4-dimethyloctanoyl]-methylamino]-4-methylpentanoyl]amino]-3-[methyl-[(2S)-3-methyl-1-[(2S)-2-[(2S)-2-methyl-5-oxo-2H-pyrrole-1-carbonyl]pyrrolidin-1-yl]-1-oxobutan-2-yl]amino]-4-oxobutan-2-yl] acetate
Synonym More Synonyms

 Microcolin B Biological Activity

Description Microcolin B is an extremely potent unusual acylpeptide, proline-containing potent immunosuppressant. Microcolin B is isolated from blue-green alga Lyngbya majuscule[1].
Related Catalog
References

[1]. • Merritt B. Andrus, et al. Synthesis of Microcolin B, a Potent New Immunosuppressant Using an Efficient Mixed Imide Formation Reaction. J. Org. Chem. 1997, 62, 16, 5542–5549.

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 835.9±65.0 °C at 760 mmHg
Molecular Formula C39H65N5O8
Molecular Weight 731.962
Flash Point 459.3±34.3 °C
Exact Mass 731.483337
PSA 157.20000
LogP 5.26
Vapour Pressure 0.0±3.1 mmHg at 25°C
Index of Refraction 1.516

 Synonyms

(2R,3S)-4-({N-[(2R,4R)-2,4-Dimethyloctanoyl]-N-methyl-L-leucyl}amino)-3-(methyl{(2S)-3-methyl-1-[(2S)-2-{[(2S)-2-methyl-5-oxo-2,5-dihydro-1H-pyrrol-1-yl]carbonyl}-1-pyrrolidinyl]-1-oxo-2-butanyl}amino)-4-oxo-2-butanyl acetate
Threoninamide,N-(2,4-dimethyl-1-oxooctyl)-N-methylleucyl-N-(1-((2-((2,5-dihydro-2-methyl-5-oxo-1H-pyrrol-1-yl)carbonyl)-1-pyrrolidinyl)carbonyl)-2-methylpropyl)-N-methyl-,acetate (ester)
Octanamide, N-[(1S)-1-[[[(2S,3R)-3-(acetyloxy)-2-[[(1S)-1-[[(2S)-2-[[(2S)-2,5-dihydro-2-methyl-5-oxo-1H-pyrrol-1-yl]carbonyl]-1-pyrrolidinyl]carbonyl]-2-methylpropyl]methylamino]-1-oxobutyl]amino]carbonyl]-3-methylbutyl]-N,2,4-trimethyl-, (2R,4R)-
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