Bo Li

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Name: 李波
Organization: Kunming Institute of Botany, Chinese Academy of Sciences , China
Department:
Title: NULL(PhD)
Co-reporter:Sheng-Tao Fang;Ji-Kai Liu
Helvetica Chimica Acta 2009 Volume 92( Issue 7) pp:1304-1308
Publication Date(Web):
DOI:10.1002/hlca.200900005

Abstract

Two new perulactone-type withanolides, named perulactone C (1) and perulactone D (2), together with four known compounds, perulactone (3), perulactone B (4), blumenol A, and (+)-(S)-dehydrovomifoliol, were isolated from the aerial parts of Physalis peruviana. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR experiments, including HMBC, HSQC, 1H,1H-COSY, and ROESY, as well as HR-MS.

Co-reporter:Sheng-Tao Fang, Ji-Kai Liu, Bo Li
Steroids (January 2012) Volume 77(Issues 1–2) pp:36-44
Publication Date(Web):1 January 2012
DOI:10.1016/j.steroids.2011.09.011
Ten new withanolides, including four perulactone-type withanolides, perulactones E−H (1–4), three 28-hydroxy-withanolides, withaperuvins I−K (5–7), and three other withanolides, withaperuvins L−N (8–10), together with six known compounds (11–16) were isolated from the aerial parts of Physalis peruviana. The structures of these compounds were elucidated on the basis of extensive spectroscopic analyses (1D and 2D NMR, IR, HR-MS) and chemical methods.Highlights► Sixteen withanolides were isolated from the aerial parts of Physalis peruviana. ► Their structures were determined by MS and NMR analysis, as well as chemical methods. ► Perulactones E–H (1–4) belong to the small group of perulactone-type withanolides.
(20S,22R)-5alpha,6beta,7beta,14alpha,17beta,20-hexahydroxy-1-oxowitha-2,24-dien-26,22-olide
(20S,22R)-14alpha,17beta,20-trihydroxy-1,4-dioxowitha-2,5,24-trien-26,22-olide
(20S,22R)-5beta,6beta-epoxy-7beta,14alpha,17beta,20-tetrahydroxy-1-oxowitha-2,24-dien-26,22- olide
(20S,22R)-5beta,6beta-epoxy-4beta,14alpha,17b,20,28-pentahydroxy-3b-methoxy-1-oxowitha-24-en-26,22-olide
(20S,22R)-14alpha,17beta,20,28-tetrahydroxy-1-oxowitha-2,5,24-trien-26,22-olide
(20S,22R)-6beta,14alpha,17beta,20,28-pentahydroxy5a-methoxy-1-oxowitha-2,24-dien-26,22-olide
perulactone B
(20S,22R,24S,25R)-4beta,5beta-epoxy-6alpha,14alpha,17beta,20,22-pentahydroxy-1-oxoergosta-2-en-26,28-olide
(20S,22R,24S,25R)-5beta,6beta-epoxy-14alpha,17beta,20,22-tetrahydroxy-1,4-dioxoergosta-2-en-26,28-olide
(20S,22R,24S,25R)-5beta,6beta-epoxy-4beta,14alpha,17beta,20,22-pentahydroxy-1-oxoergosta-2-en-26,28-olide