Ethyl (6aRS,8RS,12bRS)-6-oxo-8-phenyl-6a,7,8,12b-tetrahydro-6H-benzo[b]naphtho[1,2-d]pyran-6a-carboxylate.
In the title compound, C(26)H(22)O(4), the pyranone ring adopts a twisted boat conformation, while the cyclohexane ring is close to an envelope conformation. The dihedral angle between the mean planes of the coumarin and naphthalene systems is 78.8(1) degree. The attached phenyl ring is in an equatorial position with respect to the cyclohexane ring.
Usman
Anwar
A
X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
Razak
Ibrahim Abdul
IA
Fun
Hoong-Kun
HK
Chantrapromma
Suchada
S
Zhao
Bao-Guo
BG
Xu
Jian-Hua
JH
D003374:Coumarins / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D009281:Naphthalenes / Q000737:chemistry*
D003374:Coumarins; D009281:Naphthalenes; C454601:ethyl 6-oxo-8-phenyl-6a,7,8,12b-tetrahydro-6H-benzo(b)naphtho(1,2-d)pyran-6a-carboxylate