Stereochemistry of 1,6-Germacradien-5-ol, a Constituent of the Needles of Scots Pine (Pinus sylvestris) and of the Defence Secretion from Larvae of the Pine Sawfly Neodiprion sertifer.
First Total Synthesis of (-)-1(10),5-Germacradien-4-ol
作者:Hans-Erik Högberg、Olof Smitt
DOI:10.1055/s-2002-32970
日期:——
This paper presents a totalsynthesis of (-)-1(10),5-germacradien-4-ol, a constituent of the needles of Scots pine and of the defence secretion from the larvae of the pine sawfly. The synthesis uses a strategy based on anintramolecular alkylation to form an unsaturated monocyclic 10-membered ring.
Lessons from 1,3-Hydride Shifts in Sesquiterpene Cyclizations
作者:Jan Rinkel、Patrick Rabe、Paolina Garbeva、Jeroen S. Dickschat
DOI:10.1002/anie.201608042
日期:2016.10.17
initial 1,10‐cyclisation‐1,3‐hydride shift cascades. Enzymes with products of known absolute configuration showed a coherent stereochemical course, except for (−)‐α‐amorphene synthase, for which the obtained results are better explained by an initial 1,6‐cyclisation. The link between the absolute configuration of the product and the stereochemical course of the 1,3‐hydride shifts enabled assignment of