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Andrei Guzaev
President & Chief Science Officer

Andrei Guzaev earned his PhD from Moscow Institute of Fine Chemical Technology, Russia. He has over 30 years of diversified academic, industrial, and consulting experience in the oligonucleotide synthesis. His experience includes all aspects related to oligonucleotide chemistry: design and  development of novel reagents for modification of nucleosides, nucleotides, and oligonucleotides; preparation of building blocks, process research, optimization, scale-up, synthesis, and purification of complex oligonucleotides.  Andrei has published extensively and has been named as an inventor on a number of issued patents. Andrei founded AM Chemicals in 2003.

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Patents

  • Guzaev, A. P., Gogoi, K., Sheng, S., Lönnberg, H.; Universal solid supports and phosphoramidite building blocks for oligonucleotide synthesis, WO2024044792 A1 2024-02-29

  • Guzaev, A. P., Vvedenskiy, V. Y., Gogoi, K. Solid support and Phosphoramidite building blocks for oligonucleotide conjugates. US 10,781,175

  • Guzaev, A. P., Vvedenskiy, V. Y.; Phosphoramidite building blocks for sugar-conjugated oligonucleotides. US 10,669,301

  • Guzaev, Andrei P., Vvedenskiy, V.Y. Phosphoramidite building blocks for sugar-conjugated oligonucleotides. US 10,087,208

  • Guzaev, A. P. Sulfur transfer reagents for oligonucleotide synthesis. US 8,552,175

  • Ravikumar, V., Manoharan, M., Guzaev, A.P., Wang, Z.; Kumar, R. K.; Supports for oligomer synthesis. US 8,541,599

  • Ravikumar, V.,Manoharan, M. Guzaev, A.P., Wang, Z., Kumar, R, K.; Supports for oligomer synthesis. US 8,153,725

  • Guzaev, Andrei P. Sulfur transfer reagents for oligonucleotide synthesis. US 7,723,528

  • Ravikumar, V., Manoharan, M., Guzaev, A. P., Wang, Z,; Kumar, R, K.; Preparation of 5,6-dihydroxy-iso-indole derivatives as linkers for DNA solid phase synthesis. US Pat. Appl. Publ. (2005), 74 pp., Cont.-in-part of US. Ser. No. 770,226, US 2005208588 A1 2005/09/22

  • Guzaev, A. P., Manoharan, M.;  Preparation of oxa-bicyclic heptane universal support media for solid phase synthesis of oligodeoxyribonucleotides. U.S. Pat. Appl. Publ. (2004), 45 pp., Cont.-in-part of Appl. No. PCT/US03/23344, US  2004242897  A1 2004/12/02

  • Guzaev, A, P., Manoharan, M.;  Preparation of universal oxabicycloheptane building blocks and polymer support media for synthesis of oligonucleotides and their analogs.    U.S. Pat. Appl. Publ.  (2004), 57 pp., US  2004152905  A1 2004/08/05

  • Guzaev, A. P.; Manoharan, M.; Preparation of oligodeoxyribonucleotides using phosphate and thiophosphate protecting groups. U.S. Pat. Appl. (2004), 49 pp., Cont.-in-part of U.S. 6,610,837, US 20040082774 A1 2004/04/29

  • Guzaev, A. P.. Manoharan, M., Ravikumar, V. T.. Kumar, Kumar, R. K.; Preparation of universal polymer support media for solid phase synthesis of oligodeoxyribonucleotides. PCT Int. Appl. (2004), 118 pp. WO 2004011474 A1 2004/02/05

  • Manoharan, M., Guzaev, A.P., Maier, M. A.; Polyalkyleneamine-containing oligomers for enhanced cellular uptake. U.S. Pat. Appl. Publ. (2004), 37 pp. US 2004019000 A1 20040129

  • Maier, M.A., Guzaev, A. P., Manoharan, M.; Method for sequential support-bound synthesis of conjugated oligomeric compounds. U.S. Pat. Appl. Publ. (2004), 38 pp. US  2004006203 A1 2004/01/08

  • Guzaev, A. P.; Manoharan, M.; Preparation of universal polymer support media for solid phase synthesis of oligodeoxyribonucleotides. U.S. (2003), 33 pp. US 6653468 B1 2003/11/25

  • Guzaev, A, P., Manoharan, M.; Phosphate and thiophosphate protecting groups. U.S. (2003), 45 pp., Cont.-in-part of U.S. 6,121,437. US 6,610,837 B1

  • Guzaev, A. P.; Manoharan, M. Process for the synthesis of oligonucleotide compounds. US (2003), 24 pp., US 6,531,590 B1

  • Manoharan, M., Just, G.; Guzaev, A.P.,; Roland, A.; Wang, J., Jung, M. E.; Oligonucleotides having alkylphosphonate linkages and methods for their preparation. U.S. (2002), 14 pp., US 6,486,313 B1

  • Manoharan, M., Guzaev, A. P.; Process for preparing peptide-derivatized oligomeric compounds. U.S. Pat. Appl. Publ.  (2002), 45 pp., Cont.-in-part of U.S. Ser. No. 658,517. A1 20021024 CA 137: 279471

  • Manoharan, M.; Guzaev, A. Solid phase synthesis of cholesterol-linked and dye-labeled oligodeoxyribonucleotides. PCT Int. Appl. (2002), 111 pp. WO 0279216 A1 20021010

  • Manoharan, M.; Guzaev, A. Labeled oligonucleotides, methods for making same, and compounds useful therefor. PCT Int. Appl. (2002), 111 pp. WO 0279216 A1 20021010

  • Guzaev, A. P.; Manoharan, M. Solid phase synthesis of oligodeoxyribonucleotides. PCT Int. Appl. (2002), 92 pp. WO 0262811 A2 0020815. CA 137: 155148

  • Manoharan, M.; Guzaev, A. P. Process for preparing peptide-derivatized oligomeric compounds. PCT Int. Appl. (2002), 124 pp. WO 0220544 A1 20020314. CA 136: 63470

  • Guzaev, A. P.; Cook, P. Dan; Manoharan, M.; Bhat, B. Nucleosidic and non-nucleosidic folate conjugates. U.S. (2002), 88 pp., US 6,335,434 B1 20020101; Cont.-in-part of U. S. Ser. No. 98,166

  • Manoharan, M.; Guzaev, A. P. Labeled Oligonucleotides, methods for making same and compounds useful therefor. US patent application, (2001)

  • Guzaev, A. P.; Manoharan, M. Preparation of oligodeoxyribonucleotides using phosphate and thiophosphate protecting groups. U.S. (2000), 31 pp. US 6,121,437 A 20000919. CA 133: 222976

  • Ravikumar, V. T.; Manoharan, M.; Capaldi, D. C.; Krotz, A.; Cole, D. L.; Guzaev, A. Improved method for preparation of phosphate linked oligonucleotides with reduced formation of acrylonitrile-nucleic acid base adduct. Jpn. Kokai Tokkyo Koho (2000), 26 pp. JP 2000226399 A2 20000815; CA: 133:193420

  • Manoharan, M.; Just, G.; Guzaev, A.; Roland, A.; Wang, J.; Jung, M. E. Oligonucleotides having alkylphosphonate linkages and methods for their preparation. PCT Int. Appl. (2000), 60 pp. WO 0049032 A1 20000824. CA 132:177412

  • Manoharan, M.; Bhat, B.; Cook, P. D.; Guzaev, A. P. Manoharan, Muthiah; Bhat, Balkrishen; Cook, Phillip Dan; Guzaev, Andrei P. Preparation of nucleosidic and non-nucleosidic oligodeoxyribonucleotide-folate conjugates. PCT Int. Appl. (1999), 207 pp. WO 9966063 A2 19991223; CA 132:50215

  • Manoharan, M.; Guzaev, A. Solid phase synthesis of triester oligonucleotides having bioreversible phosphate blocking groups. PCT Int. Appl. (1999), 61 pp., WO 9964434 A1 19991216; CA: 132:35995

  • Manoharan, M.; Gusaev, A. Synthesis of oligonucleotides having bio-reversible phosphate blocking groups. PCT Int. Appl. (1999), 79 pp., WO 9955717 A1 991104; CA: 131:31080

  • Ravikumar, V.; Manoharan, M.; Capaldi, D.C.; Krotz, A.; Cole, D.L. and Guzaev, A. Process for the synthesis of oligomeric compounds. US 6,465,628 B1

  • Manoharan, M.; Guzaev, A. Synthetic Methods and Intermediates for Triester Oligonucleotides. US Patent Application Ser. No. 09/095,822

  • Guzaev, A.; Azhayev, A.; Lonnberg, H. Preparation of phosphoramidites as phosphorylating agents in synthesis of oligodeoxyribonucleotides. Eur. Pat. Appl. (1998), 25 pp., EP 816368 A1 980107

  • Manoharan, M.; Guzaev, A. Processes for the Synthesis of Oligomeric Compounds. US Patent Application Ser. No. 09/066,638

  • Guzaev, A.; Azhayev, A.; Lönnberg, H. Chemical Phosphorylation of Oligonucleotides and Reactants Used Therefor. U.S. Patent 5,959,090

  • Galev, E. E; Guzaev, A. P.; Chernov, B. K.; Smirnov, O. Yu.; Abramov, V. M.; Zavyalov, V. P. Synthetic polynucleotides encoding the surface domains of CD4 antigen of human T-lymphocytes that bind glycoprotein gp120 of human immunodeficiency virus. Patent USSR SU 1761808, 15.09 1992 (in russian); CA 119: 47359q.

  • Chugunova, N. M.; Sterkhova, E. I.; Guzaev, A. P. Method of preparing N-isobutyryl-6-O-[2-(4-nitrophenyl)ethyl]-5'-O-dimethoxytrityl-2'-deoxyguanosine. Patent USSR  SU 1696433, 08.08. 1991 (in russian); CA 117: P49161b

  • Guzaev, A. P.; Surovtseva, V. M.; Surovtsev, V. I.; Kosarev, I. V.; Guzaeva, T. V.; Chugunov, A. M. A method to prepare an immunosorbent for the isolation of protein A from Staphilococcus Aureus. Patent USSR 1317911, 15.02. 1987 (in russian)

  • Guzaev, A. P.; Peretokin, A. V.; Cysek, E. Z.; Malina, Yu. F.; Unkovskii, B. V. Process for the synthesis of  alkyl substituted beta-chloroketones. Patent USSR 1074080, 15.10. 1983 (in russian)

  • Guzaev, A. P.; Jakover, L. L.; Malina, Yu. F.; Unkovskii, B. V. N-(3-Phenylallyl) benzamides. Patent USSR 1049474, 22.06. 1983 (in russian) CA 100: P138771s

  • Guzaev, A. P.; Malina, Yu. F.; Unkovskii, B. V. Process for the synthesis of 3-acylamino-1,3-diphenyl-1-propanones. Patent USSR 1014220, 21.12. 1982 (in russian)

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