TY - JOUR
T1 - New 11(15→1)abeotaxane, 11(15→1),11(10→9)bisabeotaxane and 3,11-cyclotaxanes from Taxus yunnanensis
AU - Kiyota, Hiromasa
AU - Shi, Qing Wen
AU - Oritani, Takayuki
AU - Li, Ligeng
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Chemical examination of the seeds of Chinese yew, Taxus yunnanensis Cheng et L. K. Fu resulted in the isolation of an 11(15→1)abeotaxane, an 11(15→1), 11(10→9)bisabeotaxane and two 3,11-cyclotaxanes. The structures of these new taxoids were established as 13α-acetoxy-5α-cinnamoyloxy-11(15→1)abeotaxa-4(20),11-diene- 9α,10β,15-triol (1), 20-acetoxy-2α-benzoyloxy-4α, 5α, 7β, 9β, 13β - pentahydroxy-11(15→1), 11(10→9) bisabeotax-11-eno-10,15-lactone (2), 2α,10β-diacetoxy-5α-cinnamoyloxy-9α-hydroxy-3,11- cyclotax-4(20)-en-13-one (3) and 10β-acetoxy-2α,5α,9α-trihydroxy-3,11-cyclotax-4(20)-en- 13-one (4) on the basis of spectral analyses.
AB - Chemical examination of the seeds of Chinese yew, Taxus yunnanensis Cheng et L. K. Fu resulted in the isolation of an 11(15→1)abeotaxane, an 11(15→1), 11(10→9)bisabeotaxane and two 3,11-cyclotaxanes. The structures of these new taxoids were established as 13α-acetoxy-5α-cinnamoyloxy-11(15→1)abeotaxa-4(20),11-diene- 9α,10β,15-triol (1), 20-acetoxy-2α-benzoyloxy-4α, 5α, 7β, 9β, 13β - pentahydroxy-11(15→1), 11(10→9) bisabeotax-11-eno-10,15-lactone (2), 2α,10β-diacetoxy-5α-cinnamoyloxy-9α-hydroxy-3,11- cyclotax-4(20)-en-13-one (3) and 10β-acetoxy-2α,5α,9α-trihydroxy-3,11-cyclotax-4(20)-en- 13-one (4) on the basis of spectral analyses.
KW - 11(15→1), 11(10→9)bisabeotaxane
KW - 11(15→1)abeotaxane
KW - 3,11-cyclotaxane
KW - Taxanes
KW - Taxus yunnanensis Cheng et L. K. Fu
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U2 - 10.1271/bbb.65.35
DO - 10.1271/bbb.65.35
M3 - Article
C2 - 11272843
AN - SCOPUS:0035221768
VL - 65
SP - 35
EP - 40
JO - Bioscience, Biotechnology and Biochemistry
JF - Bioscience, Biotechnology and Biochemistry
SN - 0916-8451
IS - 1
ER -