145307-55-7Relevant academic research and scientific papers
Highly asymmetric enzymatic hydrolysis and transesterification of meso-bis(acetoxymethyl)- and bis(hydroxymethyl)cyclopentane derivatives: An insight into the active site model of Rhizopus delemar lipase
Tanaka,Yoshioka,Sakai
, p. 981 - 996 (1993)
Rhizopus delemar lipase (RDL)-catalysed hydrolysis of meso-1,3-bis(acetoxymethyl)cyclopentane derivatives (7, 12) and Pseudomonas fluorescens lipase (PFL)-catalysed hydrolysis of 7 afforded the chiral monoacetates (15, 16) of > 99% ee. In explanation of these high enantioselectivities of RDL, the simple box-type active site model of enzyme was tentatively proposed. On the other hand, PFL-catalysed transesterification of meso-bis-(hydroxymethyl)cyclopentane (6) afforded (+)-16 of > 99% ee. The obtained (+) and (-)-16 were converted into the natural carbocyclic nucleoside(-)-aristeromycin (25), respectively.
Investigations of Aristeromycin Biosynthesis: Evidence for the Intermediacy of a 2α,3α-Dihydroxy-4β-(hydroxymethyl)cyclopentane-1β-amine
Parry, Ronald J.,Haridas, Kochat,Jong, Randall De,Johnson, Carl R.
, p. 740 - 741 (1991)
Administration of doubly-labelled forms of D-glucose to the fermentation broth of Streptomyces citricolor followed by isotopic trapping has provided evidence for the intermediacy of a 2α,3α-dihydroxy-4β-(hydroxymethyl)cyclopentane-1β-amine 7 or 8 in the biosynthesis of the nucleoside antibiotic aristeromycin 1.
Tumor immunity compound and application thereof
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Paragraph 0292; 0297-0300, (2020/07/14)
Disclosed are a tumor immunity compound and an application thereof. The invention discloses a compound as shown in the formula (I), optical isomers thereof, and pharmaceutically acceptable salts thereof, and an application of the compound as an STING agonist.
A General Biomimetic Hetero-Diels-Alder Approach to the Core Skeletons of Xenovulene A and the Sterhirsutins A and B
Li, Pei-Jun,Dr?ger, Gerald,Kirschning, Andreas
, p. 998 - 1001 (2019/02/14)
A biomimetic, regio- and stereoselective approach to the 5,6,11-tricyclic core skeleton of xenovulene A, as well as sterhirsutins A and B, is described. The key steps are a biomimetic inverse-electron-demand hetero-Diels-Alder cycloaddition of α-humulene and a ribose-derived vinyl ketone, followed by acid-catalyzed rearrangement of the 1,3-dioxolane that neighbors the resultant cyclic enol ether.
