Tryprostatin A, B, Demethoxyfumitremorgin C, Spirotryptostatin B

Tryprostatin A: NPEdia
Tryprostatin B: NPEdia
Demethoxyfumitremorgin C: NPEdia
Spirotryprostatin B: NPEdia
Tryprostatin
Producing organism
Aspergillus fumigatus
Biological activity
mitotic inhibition, tubulin assemble inhibition
Abstract
Two novel diketopiperazines named tryprostatins A (1) and B (2) and a new natural product belonging to the diketopiperazine series, designated as demethoxyfumitremorgin C (3), together with four known diketopiperazines, fumitremorgin C (4), 12,13-dihydroxyfumitremorgin C (5), fumitremorgin B (6) and verruculogen (7), were isolated from the fermentation broth of Aspergillus fumigatus BM939 by the combined use of solvent extraction, silica gel column chromatography, preparative TLC and repeated-preparative HPLC. The diketopiperazines showed an inhibitory activity on the cell cycle progression of mouse tsFT210 cells in the M phase with the MIC values of 16.4 µM (1), 4.4 µM (2), 0.45 µM (3), 4.1 µM (4), 60.8 µM (5), 26.1 µM (6) and 12.2 µM (7), respectively.
References
isolation and structural determination
  • Cui CB, Kakeya H, Okada G, Onose R, Ubukata M, Takahashi I, Isono K, Osada H.: Tryprostatins A and B, novel mammalian cell cycle inhibitors produced by Aspergillus fumigatus.
    J Antibiot, 48(11): 1382-1384 (1995) PMID: 8557590
  • Cui CB, Kakeya H, Okada G, Onose R, Osada H.: Novel mammalian cell cycle inhibitors, tryprostatins A, B and other diketopiperazines produced by Aspergillus fumigatus. I. Taxonomy, fermentation, isolation and biological properties.
    J Antibiot, 49(6): 527-533 (1996) PMID: 8698634
  • Cui CB, Kakeya H, Osada H.: Novel mammalian cell cycle inhibitors, tryprostatins A, B and other diketopiperazines produced by Aspergillus fumigatus. II. Physico-chemical properties and structures.
    J Antibiot, 49(6): 534-540 (1996) PMID: 8698635
  • Cui CB, Kakeya H, Osada H.: Spirotryprostatin B, a novel mammalian cell cycle inhibitor produced by Aspergillus fumigatus.
    J Antibiot, 49(8): 832-835 (1996) PMID: 8823522
  • detailed biological activity
  • Usui T, Kondoh M, Cui CB, Mayumi T, Osada H.: Tryprostatin A, a specific and novel inhibitor of microtubule assembly.
    Biochem J, 333( Pt 3): 543-548 (1998) PMID: 9677311
  • Kondoh M, Usui T, Mayumi T, Osada H.: Effects of tryprostatin derivatives on microtubule assembly in vitro and in situ.
    J Antibiot, 51(8): 801-804 (1998) PMID: 9766472
  • structure-activity relationship
  • Wang H, Usui T, Osada H, Ganesan A.: Synthesis and evaluation of tryprostatin B and demethoxyfumitremorgin C analogues.
    J Med Chem, 43(8): 1577-1585 (2000) PMID: 10780915
  • Sanz-Cervera JF, Stocking EM, Usui T, Osada H, Williams RM.: Synthesis and evaluation of microtubule assembly inhibition and cytotoxicity of prenylated derivatives of cyclo-L-Trp-L-Pro.
    Bioorg Med Chem, 8(10): 2407-2415 (2000) PMID: 11058035
  • Additional information