Biosynthesis of sex pheromones in moths: stereochemistry of fatty alcohol oxidation in Manduca sexta
摘要:
Six chiral deuterium labelled metabolic probes, (R) and (S)-enantiomers of [1, 10, 10-H-2(3)]-hexadecan-1-ol, (11E)-[1,10,10-H-2(3)]-hexadec-11-en-1-ol and (11Z)-[1, 10, 10-H-2(3)]-hexadec-11-en-1-ol, were synthesized to examine the stereospecificity of the fatty alcohol oxidase from the female pheromone gland of the tobacco hawk moth (Manduca sexta, Sphingidae). Both in vitro and in vivo oxidations were found to proceed by selective removal of the C1-H-R hydrogen or deuterium atom (Re-specificity) to yield the corresponding aldehydes. (R) and (S)-enantiomers of deuterium labelled salicyl alcohol and 2-thienyl-methanol, compounds entirely chemically diverse from the natural pheromone precursors, were also oxidised Re-specifically to salicylaldehyde and 2-thiophenecarb-aldehyde, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.
Primary alcohols and primary/secondary amines are labelled with D atom at α-position regioselectively by means of deuterium oxide and ruthenium catalyst.
伯醇和伯/仲胺通过氧化氘和钌催化剂在α位区域选择性地用D原子标记。
A Reductive Deuteration Approach to the Efficient Synthesis of Deuterated Polymers
作者:Yanhong Dong、Jie An、Lei Ning、Lijun Wang、Mengqi Peng、Zixuan Qin、Hengzhao Li、Shangzhong Liu
DOI:10.1055/a-1796-7064
日期:2022.5
Deuterated polymers have wide applications but limited synthetic methods. In this study, we report an efficient two-step approach for the synthesis of deuterated polyesters and polyurethanes. Firstly, two practical single-electron transfer (SET) reductive-deuteration methods have been developed for site-selective introduction of C(sp3)–D into diol monomers. Nine deuterated diol monomers with high deuterium
氘代聚合物应用广泛,但合成方法有限。在这项研究中,我们报告了一种有效的两步法合成氘代聚酯和聚氨酯。首先,已经开发了两种实用的单电子转移 (SET) 还原-氘化方法,用于将 C(sp 3 )-D 位点选择性引入二醇单体中。在 SmI 2 -D 2 O 和/或 Na-EtOD- d 1下合成了九种具有高氘掺入的氘化二醇单体SET 还原氘条件。然后,使用这些氘代单体在典型的聚合条件下合成了六种典型的氘代聚酯和聚氨酯。在所有合成的聚合物中,充分保持了高氘掺入,这展示了该方法在合成具有位点特异性氘标记的聚合物中的潜在应用。
Biosynthesis of sex pheromones in moths: stereochemistry of fatty alcohol oxidation in Manduca sexta
Six chiral deuterium labelled metabolic probes, (R) and (S)-enantiomers of [1, 10, 10-H-2(3)]-hexadecan-1-ol, (11E)-[1,10,10-H-2(3)]-hexadec-11-en-1-ol and (11Z)-[1, 10, 10-H-2(3)]-hexadec-11-en-1-ol, were synthesized to examine the stereospecificity of the fatty alcohol oxidase from the female pheromone gland of the tobacco hawk moth (Manduca sexta, Sphingidae). Both in vitro and in vivo oxidations were found to proceed by selective removal of the C1-H-R hydrogen or deuterium atom (Re-specificity) to yield the corresponding aldehydes. (R) and (S)-enantiomers of deuterium labelled salicyl alcohol and 2-thienyl-methanol, compounds entirely chemically diverse from the natural pheromone precursors, were also oxidised Re-specifically to salicylaldehyde and 2-thiophenecarb-aldehyde, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.
A Convenient and Effective Method for the Regioselective Deuteration of Alcohols
The convenient and regioselectivedeuteration of hydroxy groups on vicinal carbons was achieved by the combination of 5% ruthenium on carbon (Ru/C), hydrogen gas and deuterium oxide (D2O).