Flexible Stereo- and Regioselective Synthesis ofmyo-Inositol Phosphates(Part 1): Via Symmetrical Conduritol B Derivatives
作者:Michael A. L. Podeschwa、Oliver Plettenburg、Hans-Josef Altenbach
DOI:10.1002/ejoc.200400911
日期:2005.7
myo-inositol phosphates. Optically pure compounds can be prepared, in both forms, from p-benzoquinone by enzymatic resolution of a diacetoxyconduritol key intermediate. Monosubstituted inositol derivatives can be obtained by breaking the C2 symmetry of conduritolBderivatives. A wide variety of myo-inositol phosphates can be synthesized by combining the previously reported symmetrical approach with
Stereoselective Synthesis of myo-, neo-, L-chiro, D-chiro, allo-, scyllo-, and epi-Inositol Systems via Conduritols Prepared from p-Benzoquinone
作者:Michael Podeschwa、Oliver Plettenburg、Jochen vom Brocke、Oliver Block、Stephan Adelt、Hans-Josef Altenbach
DOI:10.1002/ejoc.200200572
日期:2003.5
practical route is described for the flexible preparation of a wide variety of inositol stereoisomers and their polyphosphates. The potential of this approach is demonstrated by the synthesis of myo-, L-chiro-, D-chiro-, epi-, scyllo-, allo-, and neo-inositol systems. Optically pure compounds in either enantiomeric form can be prepared from p-benzoquinone via enzymatic resolution of a derived conduritol B
Stereoselective synthesis of several azido/amino- and diazido/diamino-myo-inositols and their phosphates from p-benzoquinone
作者:Michael A. L. Podeschwa、Oliver Plettenburg、Hans-Josef Altenbach
DOI:10.1039/b302622a
日期:——
A practical route is described for the preparation of azido-myo-inositols, amino-myo-inositols and azido-conduritol B derivatives. Starting from p-benzoquinone, optically pure compounds in both forms can be prepared via enzymatic resolution of a derived diacetoxy conduritol B derivative. Selective introduction of nitrogen-containing functional groups in four of the six possible positions in the cyclitol moiety is followed by further functionalization to yield the target compounds.
描述了一条实用路线,用于制备叠氮酚-肌醇、氨基-肌醇和叠氮-坤酮 B 衍生物。以对苯醌为起始材料,可以通过对一种衍生的二醋酸酯坤酮 B 衍生物的酶催化分离制备光学纯的化合物。这些化合物的环醇基团中六个可能位置中,有四个位置选择性引入含氮官能团,随后进行进一步的功能化,以获得目标化合物。
Total synthesis of the epoxyquinol dimer (+)-panepophenanthrin: application of a diastereospecific biomimetic Diels–Alder dimerisation
作者:Laurent Comméiras、John E. Moses、Robert M. Adlington、Jack E. Baldwin、Andrew R. Cowley、Christopher M. Baker、Birgit Albrecht、Guy H. Grant
DOI:10.1016/j.tet.2006.08.010
日期:2006.10
An asymmetric total synthesis of the novel and structurally complex epoxyquinol natural product (+)-panepophenanthrin has been accomplished, in which a biomimetic Diels–Alder dimerisation is a key step. The key monomeric precursor was assembled by an efficient Stille cross coupling of two readily available building blocks that upon standing underwent a diastereospecific dimerisation cascade in excellent
An efficient resolution of 2,3-dibromocyclohex-5-en-1,4-diol has been carried out, using Mucormieheilipase operating in an organic solvent. The enantioforms obtained may find application in the preparation of chiral conduritols.