IC50: 0.2 μg/ml for Bacillus subtilis 168 A-54556A is a natural acyldepsipeptide (ADEP) antibiotic. Acyldepsipeptides (ADEP), a new class of antibiotics, has antibacterial activity against Gram-positive bacteria. The acyldepsipeptides are active against isolates that are resistant to antibiotics, implying a new target identify as ClpP. In vitro: Previous study found that the treatment of B. subtilis with 1.6 mg/ml of A-54556A reduced the number of viable cells by 2 log units. In addition, the biosynthesis of DNA, RNA, protein, cell wall and fatty acid proceeded unhindered for 1 h at 2 mg/ml A-54556A, whereas classical antibiotics were clearly distinguished by preferential inhibition of their target pathway. Microscopic examination showed that after addition of A-54556A at concentrations as low as 0.4 mg/ml, B. subtilis started to form filaments . In vivo: Two A-54556A analogs, ADEP 2 and ADEP 4, were proven to be active in the treatment of bacterial infections in rodents. When mice were challenged with a lethal systemic infection of E. faecalis, 1 mg/kg ADEP 2 or 0.5 mg/kg ADEP 4 were sufficient for 100% survival. In lethal sepsis caused by S. aureus, 12.5 mg/kg ADEP 4 rescued 80% of the mice and reduced the bacterial loads in liver, spleen and lung by 2–3 log units compared to an untreated control . Clinical trial: Up to now, A-54556A is still in the preclinical development stage.

Product information

CAS Number: 95398-45-1

Molecular Weight: 718.84

Formula: C38H50N6O8

Chemical Name: (2E,4E,6E)-N-[(1S)-2-phenyl-1-{[(3S,7S,9R,13S,16S,19S)-9,13,16,17-tetramethyl-2,6,12,15,18-pentaoxo-5-oxa-1,11,14,17-tetraazatricyclo[17.3.0.0⁷,¹¹]docosan-3-yl]carbamoyl}ethyl]octa-2,4,6-trienamide

Smiles: CN1[C@@H](C)C(=O)N[C@@H](C)C(=O)N2C[C@H](C)C[C@H]2C(=O)OC[C@H](NC(=O)[C@H](CC2C=CC=CC=2)NC(=O)/C=C/C=C/C=C/C)C(=O)N2CCC[C@H]2C1=O

InChiKey: ZGRSXMWWGUOTAO-VIEJTCJKSA-N

InChi: InChI=1S/C38H50N6O8/c1-6-7-8-9-13-18-32(45)40-28(21-27-15-11-10-12-16-27)34(47)41-29-23-52-38(51)31-20-24(2)22-44(31)35(48)25(3)39-33(46)26(4)42(5)37(50)30-17-14-19-43(30)36(29)49/h6-13,15-16,18,24-26,28-31H,14,17,19-23H2,1-5H3,(H,39,46)(H,40,45)(H,41,47)/b7-6+,9-8+,18-13+/t24-,25+,26+,28+,29+,30+,31+/m1/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

Products are for research use only. Not for human use.