Fraile43/sandbox
Names
IUPAC name
(2S)-5-Amino-2-[[(2E,4E,6E,8E,10E,12E,14E,16E,18E,20E,22E,24E)-27-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoctacosa-2,4,6,8,10,12,14,16,18,20,22,24-dodecaenoyl]amino]pentanoic acid
Identifiers
3D model (JSmol)
  • InChI=1S/C39H52N2O8/c1-31(48-39-37(45)36(44)35(43)32(2)49-39)27-24-22-20-18-16-14-12-10-8-6-4-3-5-7-9-11-13-15-17-19-21-23-25-29-34(42)41-33(38(46)47)28-26-30-40/h3-25,29,31-33,35-37,39,43-45H,26-28,30,40H2,1-2H3,(H,41,42)(H,46,47)/b4-3+,7-5+,8-6+,11-9+,12-10+,15-13+,16-14+,19-17+,20-18+,23-21+,24-22+,29-25+/t31?,32-,33-,35-,36+,37+,39+/m0/s1
    Key: PPFISAQUKQQDHW-OBEWLBDZSA-N
  • C[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](O1)OC(C)C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C=C/C(=O)N[C@@H](CCCN)C(=O)O
Properties
C39H52N2O8
Molar mass 676.851 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Tracking categories (test):

Granadaene is the trivial name of a non-isoprenoid polyene that constitutes the red pigment characteristic of Streptococcus agalactiae (group B streptococcus).

Characteristics

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Granadaene contains a conjugated system made up of a linear chain of 12 conjugated double bonds which is conntected to the amino acid ornithine at one end and the sugar rhamnose at the other.[1][2] Granadaene is dark red, odorless, insoluble in water, methanol, ethanol, diethyl ether, acetone, hexane, dimethyl sulfoxide (DMSO), acetonitrile, tetrahydrofuran, chloroform, and in most solvents, it is soluble in DMSO–0.1% trifluoroacetic acid (TFA).[1] Granadaene, can be extracted from cultures of S.agalactiae in granada broth (granada medium without agar) with 0.1 M potassium hydroxide (KOH) and purified by size-exclusion chromatography on Sephadex LH using DMSO–0.1%TFA.[1]

 
Streptococcus agalactiae in granada broth
 
Ultraviolet/visible spectrum of granadaene, in DMSO+TFA
 
Proposed metabolic pathway for granadaene biosynthesis
  1. ^ a b c Rosa-Fraile M, Rodríguez-Granger J, Haidour-Benamin A, Cuerva JM, Sampedro A (2006). "Granadaene: Proposed Structure of the Group B Streptococcus Polyenic Pigment". Appl Environ Microbiol. 72 (9): 6367–6370. doi:10.1128/aem.00756-06. PMC 1563658. PMID 16957264.
  2. ^ Paradas M, Jurado R, Haidour A, Rodríguez Granger J, Sampedro Martínez A, de la Rosa Fraile M, Robles R, Justicia J, Cuerva JM (2012). "Clarifying the structure of granadaene: Total synthesis of related analogue - granadaene and confirmation of its absolute stereochemistry". Bioorg Med Chem. 20 (22): 6655–6661. doi:10.1016/j.bmc.2012.09.017. PMID 23043725.