Research output: Contribution to journal › Article › peer-review
Synthesis of unsaturated precursors for parahydrogen-induced polarization and molecular imaging of 1-13C-Acetates and 1-13C-pyruvates via side arm hydrogenation. / Chukanov, Nikita V.; Salnikov, Oleg G.; Shchepin, Roman V. et al.
In: ACS Omega, Vol. 3, No. 6, 30.06.2018, p. 6673-6682.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synthesis of unsaturated precursors for parahydrogen-induced polarization and molecular imaging of 1-13C-Acetates and 1-13C-pyruvates via side arm hydrogenation
AU - Chukanov, Nikita V.
AU - Salnikov, Oleg G.
AU - Shchepin, Roman V.
AU - Kovtunov, Kirill V.
AU - Koptyug, Igor V.
AU - Chekmenev, Eduard Y.
N1 - Publisher Copyright: © 2018 American Chemical Society.
PY - 2018/6/30
Y1 - 2018/6/30
N2 - Hyperpolarized forms of 1-13C-Acetates and 1-13C-pyruvates are used as diagnostic contrast agents for molecular imaging of many diseases and disorders. Here, we report the synthetic preparation of 1-13C isotopically enriched and pure from solvent acetates and pyruvates derivatized with unsaturated ester moiety. The reported unsaturated precursors can be employed for NMR hyperpolarization of 1-13Cacetates and 1-13C-pyruvates via parahydrogen-induced polarization (PHIP). In this PHIP variant, Side arm hydrogenation (SAH) of unsaturated ester moiety is followed by the polarization transfer from nascent parahydrogen protons to 13C nucleus via magnetic field cycling procedure to achieve hyperpolarization of 13C nuclear spins. This work reports the synthesis of PHIP-SAH precursors: vinyl 1-13C-Acetate (55% yield), allyl 1-13C-Acetate (70% yield), propargyl 1-13C-Acetate (45% yield), allyl 1-13C-pyruvate (60% yield), and propargyl 1-13C-pyruvate (35% yield). Feasibility of PHIP-SAH 13C hyperpolarization was verified by 13C NMR spectroscopy: hyperpolarized allyl 1-13C-pyruvate was produced from propargyl 1-13C-pyruvate with 13C polarization of ∼3.2% in CD3OD and ∼0.7% in D2O. 13C magnetic resonance imaging is demonstrated with hyperpolarized 1-13C-pyruvate in aqueous medium.
AB - Hyperpolarized forms of 1-13C-Acetates and 1-13C-pyruvates are used as diagnostic contrast agents for molecular imaging of many diseases and disorders. Here, we report the synthetic preparation of 1-13C isotopically enriched and pure from solvent acetates and pyruvates derivatized with unsaturated ester moiety. The reported unsaturated precursors can be employed for NMR hyperpolarization of 1-13Cacetates and 1-13C-pyruvates via parahydrogen-induced polarization (PHIP). In this PHIP variant, Side arm hydrogenation (SAH) of unsaturated ester moiety is followed by the polarization transfer from nascent parahydrogen protons to 13C nucleus via magnetic field cycling procedure to achieve hyperpolarization of 13C nuclear spins. This work reports the synthesis of PHIP-SAH precursors: vinyl 1-13C-Acetate (55% yield), allyl 1-13C-Acetate (70% yield), propargyl 1-13C-Acetate (45% yield), allyl 1-13C-pyruvate (60% yield), and propargyl 1-13C-pyruvate (35% yield). Feasibility of PHIP-SAH 13C hyperpolarization was verified by 13C NMR spectroscopy: hyperpolarized allyl 1-13C-pyruvate was produced from propargyl 1-13C-pyruvate with 13C polarization of ∼3.2% in CD3OD and ∼0.7% in D2O. 13C magnetic resonance imaging is demonstrated with hyperpolarized 1-13C-pyruvate in aqueous medium.
KW - C-13 POLARIZATION
KW - HYPERPOLARIZED MAGNETIC-RESONANCE
KW - IN-VIVO
KW - ORDER TRANSFER
KW - PASADENA HYPERPOLARIZATION
KW - PYRUVATE
KW - SIGNAL AMPLIFICATION
KW - SOLUBILITY
KW - SPIN ORDER
KW - TRANSFORMATION
UR - http://www.scopus.com/inward/record.url?scp=85051232031&partnerID=8YFLogxK
U2 - 10.1021/acsomega.8b00983
DO - 10.1021/acsomega.8b00983
M3 - Article
C2 - 29978146
AN - SCOPUS:85051232031
VL - 3
SP - 6673
EP - 6682
JO - ACS Omega
JF - ACS Omega
SN - 2470-1343
IS - 6
ER -
ID: 17233869