ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract (3αβ(Z),4β,6aα,9aβ,9bβ)-(±)-3a,4,6a,7,8,9,9a,9b-octahydro-4,7,7, 9b-tetramethyl-3a-[3-(methoxymethyloxy)-3-methyl-1-butenyl]-5H-naphto[1,8-de]-1,3-dioxin-6-one (I), C22H36O5,M r=378.51, monoclinic,P21/n,a=6.330(1),b=14.576(2),c=22.837(2)Å,β=93.04(1)°,V=2104.1(2)Å3,Z=4,D c=1.19 Mg/m3, λ(MoKα)=0.71069Å,β=0.8 cm−1,F(000)=832,T=298 K,R=0.054 for 1971 observed reflections; (7aβ,10aα,10bβ,12α)-(±)-7a,9, 10,10a,10b,11,12,12a-octahydro-2,2,10,10,10b,12a-hexamethyl-2H,8H-1-benzopyrano[4a,5,6,-de][1,3,2]-benzodioxin-11-one (II), C20H29O4,M r=334.5, triclinic,P-1,a=10.595(2),b=12.152(1),c=8.073(1)Å,α=106.53(1),β=105.65(1), γ=66.29(1)°,V=897.9(2)Å3,Z=2,D c=1.24 Mg/m3, λ(MoKα)=0.71069Å,β=0.8 cm−1,F(000)=362,T=298 K,R=0.046 for 2848 observed reflections; (7aβ,10aα,10bβ,12α, 12aα)-(±)-7a,9,10,10a,10b,11,12,12a-octahydro-2,2,10,10,10b,12a-hexamethyl-2H,8H-1-benzopyrano[4a,5,6-de][1,3,2]-benzodioxin-11, 12-diol (III), C20H32O5 (two molecules in the asymmetric unit),M r=352.2, triclinic,P-1,a=12.948(3),b=13.615(3),c=12.197(4)Å,α=101.16(2),β=111.88(2), γ=69.48(2)°,V=1863.8(9)Å3,Z=2,D C=1.26 Mg/m3,λ(MoKα)=0.71069 Å,β=0.8 cm−1,F(000)=768,T=298 K,R=0.060 for 4570 observed reflections; 4-acetoxy-4-[[(4aβ,5α,8aβ)-(±)-hexahydro-4a,6,6-trimethyl-4H-1,3-benzodioxin-4-one]-5-yl]butan-2-one (IV), C17H26O6,M r=326.4, monoclinic,P21/c,a=10.495(2),b=12.050(2),c=14.216(2)Å,β=108.51(1)°,V=1704.8(5)Å3,Z=4,D c=1.27 Mg/m3,λ(MoKα)=0.71069 Å,β=0.9 cm−1,F(000)=704,T=298 K,R=0.049 for2455 observed reflections; (3aα,4β,5β,6β,6aα,9aβ,9bβ)-(±)-4,5-epoxy-decahydro-3, 3a-dihydroxy-2-ethoxy-4,7,7,9b-tetramethyl-naphto-[1,8-bc]-pyran-6-ol-acetate (V), C20H32O7,M r=383.5, monoclinic,C2/c,a=10.353(2),b=17.975(3),c=21.188(3)Å,β=91.29(1)°,V=3942(1)Å3,Z=8,D c=1.29 Mg/m3,λ(MoKα)=0.71069 Å,β=0.8 cm−1,F(000)=1664,T=298 K,R=0.051 for 2120 observed reflections. We report here the complete structures of four decalin derivatives (compoundsI, II, III, V) and one related compound (compoundIV) synthetized in order to find an efficient synthetic approach for the natural productforskolin.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01190047
