59. De Voss, J. J.; Townsend, C. A.; Ding, W.-D.; Morton, G. O.; Ellestad, G. A.; Zein, N.; Tabor, A. B.; Schreiber, S. L. “Site-Specific Atom Transfer From DNA to a Bound Ligand Defines the Geometry of a DNA-Calicheamicin γ₁^I Complex,” J. Am. Chem. Soc. 1990, 112, 9669-9670.

58. De Voss, J. J.; Hangeland, J. J.; Townsend, C. A. “Characterization of the in vitro Cyclization Chemistry of Calicheamicin and its Relation to DNA Cleavage,” J. Am. Chem. Soc., 1990, 112, 4554-4556.

57. Salowe, S. P.; Marsh, E. N.; Townsend, C. A. “Purification and Characterization of Clavaminate Synthase from Streptomyces clavuligerus: An Unusual Oxidative Enzyme in Natural Product Biosynthesis,” Biochemistry 1990, 29, 6499-6508.

56. Basak, A.; Salowe, S. P.; Townsend, C. A. “Stereochemical Course of the Key Ring-Forming Reactions in Clavulanic Acid Biosynthesis,” J. Am. Chem. Soc., 1990, 112, 1654-1656.

55. Salituro, G. M.; Townsend, C. A. “Total Syntheses of (-)-Nocardicins A-G: A Biogenetic Approach,” J. Am. Chem. Soc., 1990, 112, 760-770.

54. McGuire, S. M.; Brobst, S. W.; Graybill, T. L.; Pal, K.; Townsend, C. A. “Partitioning of Tetrahydro- and Dihydrobisfuran Formation in Aflatoxin Biosynthesis by Cell-Free and Direct Incorporation Experiments,” J. Am. Chem. Soc. 1989, 111, 8308-8309.

53. Graybill, T. L.; Pal, K.; McGuire, S. M.; Brobst, S. W.; Townsend, C. A. “The Timing of Aromatic Deoxygenation in Aflatoxin Biosynthesis,” J. Am. Chem. Soc. 1989, 111, 8306-8308.

52. Krol, W. J.; Basak, A.; Salowe, S. P.; Townsend, C. A. “Oxidative Cyclization Chemistry Catalyzed by Clavaminate Synthetase,” J. Am. Chem. Soc.1989, 111, 7625-7627.

51. Townsend, C. A.; Isomura, Y.; Davis, S. G. “Reaction Models of the Oxidative Rearrangement of Averufin to 1′-Hydroxyversicolorone: The First Step in Dihydrobisfuran Formation in Aflatoxin Biosynthesis,” A Symposium-in-Print, Tetrahedron 1989, 45, 2263-2276.

50. Wilson, B. A.; Bantia, S.; Salituro, G. M.; Holbrooks, A. McE.; Townsend, C. A. “Cell-Free Biosynthesis of Nocardicin A from Nocardicin E and S-Adenosylmethionine,” J. Am. Chem. Soc. 1988, 100, 8238-8239.

49. Townsend, C. A.; Holbrooks, A. McE.; Salituro, G. M. “Stereochemical Fate of (2S,4R)- and (2S,4S)-[4-2H]Methionine in Nocardicin A Biosynthesis,” J. Chem. Soc., Chem. Commun. 1988, 1579-1581.

48. Townsend, C. A.; Krol, W. J. “The Role of Molecular Oxygen in Clavulanic Acid Biosynthesis: Evidence for a Bacterial Oxidative Deamination,” J. Chem. Soc., Chem. Commun. 1988, 1234-1236.

47. Townsend, C. A.; Whittamore, P. R. O.; Brobst, S. W. “Hydroxyversicolorone: Synthesis and Incorporation of a New Intermediate in Aflatoxin Biosynthesis,” J. Chem. Soc., Chem. Commun. 1988, 726–728.

46. Townsend, C. A.; Wilson, B. A. “The Role of Nocardicin G in Nocardicin A Biosynthesis,” J. Am. Chem. Soc. 1988, 110, 3320–3321.

45. Townsend, C. A.; Plavcan, K. A.; Pal, K.; Brobst, S. W.; Irish, M. S.; Ely, E. W., Jr.; Bennett, J. W. “Hydroxyversicolorone: Isolation and Characterization of a Potential Intermediate in Aflatoxin Biosynthesis,” J. Org. Chem. 1988, 53, 2472–2477.

44. Townsend, C. A.; Brobst, S. W.; Ramer, S. E.; Vederas, J. C. “Stereochemical Features of Enoyl Thioester Reductase in Averufin and Fatty Acid Biosynthesis in Aspergillus parasiticus,” J. Am. Chem. Soc. 1988, 110, 318–319.

43. Townsend, C. A.; Christensen, S. B.; Davis, S. G. “Synthesis of Averufin and Its Role in Aflatoxin B₁ Biosynthesis,” J. Chem. Soc., Perkin Trans. I 1988, 839–861.

42. Townsend, C. A.; Mao, S.-s. “Clavulanic Acid Biosynthesis: The Stereochemical Course of β-Lactam Formation from Chiral Glycerol,” J. Chem. Soc., Chem. Commun. 1987, 86–89.

41. Townsend, C. A.; Salituro, G. M.; Nguyen, L. T.; DiNovi, M. J. “Biogenetically-Modelled Total Syntheses of (-)-Nocardicin A and (-)-Nocardicin G,” Tetrahedron Lett. 1986, 27, 3819–3822.

40. Schwab, J. M.; Ho, C.-k.; Li, W.-b.; Townsend, C. A.; Salituro, G. M. “b-Hydroxy-decanoyl Thioester Dehydrase. Complete Characterization of the Fate of the ‘Suicide’ Substrate, 3-Decynoyl-NAC,” J. Am. Chem. Soc. 1986, 108, 5309–5316.

39. Townsend, C. A.; Christensen, S. B. “Stereochemical Correlation of (-)-Averantin,” Tetrahedron Lett. 1986, 27, 887–888.

38. Townsend, C. A.; Ho, M.-f.; Mao, S.-s. “The Stereochemical Fate of (2RS,5R)- and (2RS,5S)-[5-3H]Ornithine in Clavulanic Acid Biosynthesis,” J. Chem. Soc., Chem. Commun. 1986, 639–639.

37. Townsend, C. A. “Progress Toward a Biosynthetic Rationale of the Aflatoxin Pathway,” Pure & Appl. Chem. 1986, 58, 227–238.