55515-07-6Relevant articles and documents
Synthesis and In Vitro Anticancer Activity of Triazolyl Analogs of Podophyllotoxin, a Naturally Occurring Lignin
Ara, T.,Banday, J. A.,Bhat, B. A.,Ganaie, B. A.
, p. 2039 - 2047 (2022/01/24)
Abstract: A series of triazolyl-modified podophyllotoxin analogs have been designed and synthesized by utilizing Huisgen 1,3-dipolar cycloaddition in order to develop potent antitumor agents. The synthesized analogs were assessed for in vitro anticancer a
Scalable Aerobic Oxidation of Alcohols Using Catalytic DDQ/HNO3
Arseniyadis, Stellios,Clavier, Louis,Copin, Chloé,Fournier, Jean,Giffard, Jean-Fran?ois,Jean, Alexandre,Katsina, Tania,Macedo Portela Da Silva, Nayane,Tamion, Rodolphe
supporting information, p. 856 - 860 (2020/07/14)
A selective, practical, and scalable aerobic oxidation of alcohols is described that uses catalytic amounts of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and HNO3, with molecular oxygen serving as the terminal oxidant. The method was successfully applied to the oxidation of a wide range of benzylic, propargylic, and allylic alcohols, including two natural products, namely, carveol and podophyllotoxin. The conditions are also applicable to the selective oxidative deprotection of p-methoxybenzyl ethers.
Chemoenzymatic Total Synthesis of Deoxy-, epi-, and Podophyllotoxin and a Biocatalytic Kinetic Resolution of Dibenzylbutyrolactones
Lazzarotto, Mattia,Hammerer, Lucas,Hetmann, Michael,Borg, Annika,Schmermund, Luca,Steiner, Lorenz,Hartmann, Peter,Belaj, Ferdinand,Kroutil, Wolfgang,Gruber, Karl,Fuchs, Michael
supporting information, p. 8226 - 8230 (2019/05/21)
Podophyllotoxin is probably the most prominent representative of lignan natural products. Deoxy-, epi-, and podophyllotoxin, which are all precursors to frequently used chemotherapeutic agents, were prepared by a stereodivergent biotransformation and a biocatalytic kinetic resolution of the corresponding dibenzylbutyrolactones with the same 2-oxoglutarate-dependent dioxygenase. The reaction can be conducted on 2 g scale, and the enzyme allows tailoring of the initial, “natural” structure and thus transforms various non-natural derivatives. Depending on the substitution pattern, the enzyme performs an oxidative C?C bond formation by C?H activation or hydroxylation at the benzylic position prone to ring closure.