Supporting Information for Amethysione and Amethysamide, New Metabolites from Streptosporangium amethystogenes BCC 27081 Chollaratt Boonlarppradab, Chanwit Suriyachadkun, Sumalee Supothina and Pattiyaa Laksanacharoen National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Thanon Phahonyothin, Tambon Khlong Neung, Amphoe Khlong Luang, Pathum Thani 12120, Thailand Table of Contents S1A-S1B. Table of Contents S2. 1H NMR spectrum of amethysione (1) in acetone-d6. S3. 13C NMR spectrum of amethysione (1) in acetone-d6. S4. 1H-1H COSY NMR spectrum of amethysione (1) in acetone-d6. S5. HMQC NMR spectrum of amethysione (1) in acetone-d6. S6. HMBC NMR spectrum of amethysione (1) in acetone-d6. S7. NOESY NMR spectrum of amethysione (1) in acetone-d6. S8. DEPT NMR spectrum of amethysione (1) in acetone-d6. S9. 1H NMR spectrum of amethysamide (2) in acetone-d6. S10. 13C NMR spectrum of amethysamide (2) in acetone-d6. S11. 1H-1H COSY NMR spectrum of amethysamide (2) in acetone-d6. S12. HMQC NMR spectrum of amethysamide (2) in acetone-d6. S13. HMBC NMR spectrum of amethysamide (2) in acetone-d6. S14. NOESY NMR spectrum of amethysamide (2) in acetone-d6. S15. DEPT NMR spectrum of amethysamide (2) in acetone-d6. S16. 1H NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S17. 13C NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S18. 1H-1H COSY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S19. HMQC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S20. HMBC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S21. NOESY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S22. DEPT NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) in acetone-d6. S23. 1H NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S24. 13C NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S25. 1H-1H COSY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S26. HMQC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S27. HMBC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S28. NOESY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S29. DEPT NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) in acetone-d6. S30A-S30B. 1H NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S31. 13C NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S32. 1H-1H COSY NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S33. HMQC NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S34. HMBC NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S35. NOESY NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S36. DEPT NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) in acetone-d6. S37A-S37C. Biological assays and their references -S21 H NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S313 C NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S41 H-1H COSY NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S5HMQC NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S6HMBC NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S7NOESY NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S8DEPT NMR spectrum of amethysione (1) (400MHz, acetone-d6) -S91 H NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S1013 C NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S111 H-1H COSY NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S12HMQC NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S13HMBC NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S14NOESY NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S15DEPT NMR spectrum of amethysamide (2) (400MHz, acetone-d6) -S161 H NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S1713 C NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S181 H-1H COSY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S19HMQC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S20HMBC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S21NOESY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S22DEPT NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid (3) (500MHz, acetone-d6) -S231 H NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S2413 C NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S251 H-1H COSY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S26HMQC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S27HMBC NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S28NOESY NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S29DEPT NMR spectrum of 2-(3-phenethyl-ureido)-benzoic acid methyl ester (4) (500MHz, acetone-d6) -S30A1 H NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S30B1 H NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (400MHz, acetone-d6) -S3113 C NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S321 H-1H COSY NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S33HMQC NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S34HMBC NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S35NOESY NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) -S36DEPT NMR spectrum of N-phenethyl-2-(3-phenethyl-ureido)-benzamide (5) (500MHz, acetone-d6) Biological Assays Cytotoxic activity against Vero cell (African green monkey kidney fibroblasts) was evaluated by the green fluorescent protein (GFP)-based assay.1 Ellipticine was used as a standard control for cyctotoxic assay against vero cell lines and displayed IC 50 value of 0.764 g/ml. Antifungal activity against Candida albicans and cytotoxic screening against cancer cell lines, including KB (human epidermoid carcinoma), MCF-7 (human breast cancer), and NCI-H187 (human small cell lung cancer) were performed using the resazurin microplate assay (REMA).2 The standard antifungal drug, amphotericin B, exhibited antifungal activity with IC50 value of 0.107 g/ml, while Doxorubicin was chosen as positive controls for cytotoxic tests against KB, MCF-7 and NCI-H187 with respective IC50 values of 0.507 g/ml, 7.91 g/ml, and 0.071 g/ml. Antimalarial activity against Plasmodium falciparum K1 was derived by the microculture radioisotope technique.3 The IC50 value of a standard antimalarial agent, dihydroartemisinin, was 0.751 ng/ml. Growth inhibition against Mycobacterium tuberculosis (H37Ra strain) was determined by a green fluorescent protein microplate assay (GFPMA)4 and the MIC value of a standard drug, isoniazid, was 0.0469 g/ml. Antimicrobial assay against Enterococcus faecium, Acinetobacter baumannii and Pseudomonas aeruginosa was performed using the optical density microplate assay (OD).5 Rifampicin, used as a standard antibacterial drug against A. baumannii and E. faecium, exhibited MIC values at 3.13 g/ml, and 6.25-12.50 g/ml respectively. For P. aeruginosa, Erythromycin was used as a standard control with MIC values at 8.00 g/ml. Anti-phytopathogenic fungal activity against Magnaporthe grisea was performed using fluorometric method6 with amphotericin B as antifungal agent, exhibited MIC value of 1.56-3.13 g/ml. -S37A- Measurement of activities against plant pathogens Colletotrichum capsici and Colletotrichum gloeosporioides was carried out by fluorometric method.7 The MIC value of a positive control amphotericin B was 1.56-3.13 g/ml. MIC and IC50 values more than 50 g/ml were reported as inactive. References 1. Changsen, C., Franzblau, S. G. & Palittapongarnpim, P. Improved Green Fluorescent Protein Reporter Gene-Based Microplate Screening for Antituberculosis Compounds by Utilizing an Acetamidase Promoter. Antimicrob. Agents Chemother. 47, 3682–3687 (2003). 2. O'Brien, J., Wilson, I., Orton, T. & Pognan, F. Investigation of the Alamar Blue (resazurin) fluorescent dye for the assessment of mammalian cell cytotoxicity. Eur. J. Biochem. 267, 5421–5426 (2000). 3. Desjardins, R. E., Canfield, C. J., Haynes, J. D. & Chulay, J. D. Quantitative assessment of antimalarial activity in vitro by a semiautomated microdilution technique. Antimicrob. Agents Chemother. 16, 710–718 (1979). 4. Collins, L. A., Torrero, M. N. & Franzblau, S. G. Green Fluorescent Protein Reporter Microplate Assay for High-Throughput Screening of Compounds against Mycobacterium tuberculosis. Antimicrob. Agents Chemother. 42, 344–347 (1998). 5. Sarker, S. D., Nahar, L. & Kumarasamy, Y. Microtitre plate-based antibacterial assay incorporating resazurin as an indicator of cell growth, and its application in the in vitro antibacterial screening of phytochemicals. Methods. 42, 321–324 (2007). -S37B- 6. Chutrakul, C., Boonruangprapa, T., Suvannakad, R., Isaka, M., Sirithunya, P., Toojinda, T. & Kirtikara, K. Ascherxanthone B from Aschersonia luteola, a new antifungal compound active against rice blast pathogen Magnaporthe grisea. J. Appl. Microbiol. 107, 1624–1631 (2009). 7. Chutrakul, C., Khaokhajorn, P., Auncharoen, P., Boonruengprapa, T. & Mongkolporn, O. The potential of a fluorescent-based approach for bioassay of antifungal agents against chili anthracnose disease in Thailand. Biosci. Biotechnol. Biochem. 77, 259–265 (2013). -S37C-