Study of butyrolactones related to sub-type 3 annonaceous acetogenins. Structure revision of itrabin, jetein, laherradurin and otivarin
摘要:
Starting from 5(S)-hydroxymethyl-gamma-butyrolactone 1, lactones related to title acetogenins have been prepared in few steps. This study leads to a structure revision of the lactone configurations of these acetogenins. (C) 1998 Elsevier Science Ltd. All rights reserved.
Study of butyrolactones related to sub-type 3 annonaceous acetogenins. Structure revision of itrabin, jetein, laherradurin and otivarin
摘要:
Starting from 5(S)-hydroxymethyl-gamma-butyrolactone 1, lactones related to title acetogenins have been prepared in few steps. This study leads to a structure revision of the lactone configurations of these acetogenins. (C) 1998 Elsevier Science Ltd. All rights reserved.
Novel synthesis of the indolizidine alkaloid skeleton with appropriate functionality and stereochemistry for use as a ‘chiral scaffold’
作者:Elizabeth Farrant、John Mann
DOI:10.1039/a701193h
日期:——
A stereocontrolled synthesis of the indolizidine alkaloid
skeleton has been achieved via an intramolecular,
photoinduced reaction of
(5S)-5-triisopropylsilyloxymethyl-3-2â²
-[(3â³S)-3â³
-methoxypyrrolidinyl]ethyl}furan-2-(5H)-one,
which can be obtained in a highly convergent fashion from
(5S)-5-triisopropylsilyloxymethyltetrahydrofuran-2-one
and (3S)-3-methoxypyrrolidine.
Starting from 5(S)-hydroxymethyl-gamma-butyrolactone 1, lactones related to title acetogenins have been prepared in few steps. This study leads to a structure revision of the lactone configurations of these acetogenins. (C) 1998 Elsevier Science Ltd. All rights reserved.