Gonane

For the closely related derivatives of gonane, see Sterane.
Gonane
Stereo, skeletal formula of gonane ((1R,2S,10S,11R,15S)-heptadecane) with all chiral centres hydrogenised
Carbon numbering in gonane
Names
IUPAC name
5ξ-Gonane
Systematic IUPAC name
(3aR,3bS,5aΞ,9aS,9bR,11aS)-Hexadecahydro-1H-cyclopenta[a]phenanthrene
Identifiers
  • 4732-76-7 (1R,2S,10S,11R,15S)- heptadecane ☒N
3D model (JSmol)
ChEBI
ChemSpider
  • 5256859 (1R,2S,10S,11R,15S)- heptadecane checkY
  • 5256861 (1R,2S,7R,10S,11R,15S)- heptadecane checkY
  • 5256860 (1R,2S,7S,10S,11R,15S)- heptadecane checkY
  • 1077 checkY
KEGG
  • 1108
  • 6857523 (1R,2S,10S,11R,15S)- heptadecane
  • 6857525 (1R,2S,7R,10S,11R,15S)- heptadecane
  • 6857524 (1R,2S,7S,10S,11R,15S)- heptadecane
  • InChI=1S/C17H28/c1-2-6-14-12(4-1)8-10-17-15-7-3-5-13(15)9-11-16(14)17/h12-17H,1-11H2/t12?,13-,14-,15+,16+,17-/m0/s1 checkY
    Key: UACIBCPNAKBWHX-CTBOZYAPSA-N checkY
  • C2C1[C@H](CCCC1)[C@H]3CC[C@H]4[C@H]([C@@H]3C2)CCC4
Properties
C17H28
Molar mass 232.411 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gonane (cyclopentanoperhydrophenanthrene) is a chemical compound with formula C
17H
28, whose structure consists of four hydrocarbon rings fused together: three cyclohexane units and one cyclopentane. It can also be viewed as the result of fusing a cyclopentane molecule with a fully hydrogenated molecule of phenanthrene, hence the more descriptive name "perhydrocyclopenta[a]phenanthrene". The non-systematic version of the above name is "cyclopentanoperhydrophenanthrene".[1]

It has no double bonds, that is, it is completely saturated and is considered the main structure of steroids, often referred to as the steroid nucleus.[1] There are many forms of gonane, but only a few occur naturally in living organisms. Some common forms include 5α-gonane and 5β-gonane. Estrane, androstane, and pregnane are variants of gonane with additional methyl or ethyl groups attached to certain carbon positions. The term gonane is also used to describe a group of progestins that are similar to levonorgestrel but have a slightly different structure than other hormones like estranes.

  1. ^ a b Yang, Yanqing; Krin, Anna; Cai, Xiaoli; Poopari, Mohammad Reza; Zhang, Yuefei; Cheeseman, James R.; Xu, Yunjie (2023-01-12). "Conformations of Steroid Hormones: Infrared and Vibrational Circular Dichroism Spectroscopy". Molecules (Basel, Switzerland). 28 (2): 771. doi:10.3390/molecules28020771. ISSN 1420-3049. PMC 9864676. PMID 36677830.