(5S,8S,9S,10S,13S,14S)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one is a complex organic compound with a molecular formula of C19H30O. It is a stereoisomer with six chiral centers, resulting in a specific arrangement of atoms in its structure. (5S,8S,9S,10S,13S,14S)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one belongs to the class of cyclopenta[a]phenanthren-3-ones, which are derivatives of cyclopenta[a]phenanthrene, a type of polycyclic aromatic hydrocarbon. The presence of multiple methyl groups and a ketone functional group at position 3 contributes to its unique chemical properties. (5S,8S,9S,10S,13S,14S)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one is of interest in the field of organic chemistry, particularly in the study of complex molecular structures and their potential applications in various industries.
The CAS Registry Mumber 3248-10-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,4 and 8 respectively; the second part has 2 digits, 1 and 0 respectively. Calculate Digit Verification of CAS Registry Number 3248-10: (6*3)+(5*2)+(4*4)+(3*8)+(2*1)+(1*0)=70 70 % 10 = 0 So 3248-10-0 is a valid CAS Registry Number.
Lupon, Pilar,Canals, Francesc,Iglesias, Arsenio,Ferrer, Joan C.,Palomer, Albert,et al.
, p. 2193 - 2198 (1988)
Irradiation with UV light of 5α-androst-1-en-3-one (9) in concentrated sulfuric acid leads to 15 and 16; similarly 4a-methyl-4a,5,6,7,8,8a-hexahydronaphthalen-2(1H)-one (10) gives 17 and 18.The formation of the four products is rationalized in terms of a photochemically induced 1,2-alkyl shift to the positively charged positions of the starting carbenium ions.On the other hand, irradiation under the same conditions of 4, 8, 7, and 11 yields, quantitatively, unchanged starting material, while the analogous bicyclic compound Δ1,9-10-methyl-2-octalone (1) has been reported to yield photorearrangement products.The lack of reactivity of 7 and 11 can be explained according to the proposed mechanism for the photorearrangement of 1.In the case of 4 and 8, the presence of the steroid rings C and D prevents the photorearrangement, but the mechanistic explanation of this effect cannot be determined from the present experimental data.
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